Best Underwater Unlocked Mobile Phones in 2026

6.67” AMOLED DotDisplay20:9, 2712x1220446 ppiRefresh rate: 120HzTouch sampling rate: Up to 480HzAdaptiveSync display: 30Hz/60Hz/90Hz/120HzContrast ratio: 5,000,000:1Over 68 billion colorsColor gamut: DCI-P3Brightness: 500 nits (typ) 900 nits peak brightness 4096 level brightness adjustmentHDR10+Dolby VisionCorningGorillaGlass 5Supports Adaptive HDRSupports True DisplaySupports Adaptive reading modeSupports Sunlight modeSGS Low Visual Fatigue Certification360° ambient light sensors

Snapdragon 8+ Gen 14nm power-efficient manufacturing processUp to 3.2GHz, with Armv9 Cortex-X2 technology CPU: 1x Prime core (X2-based), 3.2GHz 3x Gold cores (A710-based), 2.75GHz 4x Sliver cores (A510-based), 2.0GHzGPU: Qualcomm Adreno GPU7th Gen Qualcomm AI Engine

5000mAh battery (typ)Supports 120W wired turbo charging19mins to 100%Inbox 120W chargerUSB type-cXiaomi AdaptiveCharge

Liquid cooling system (Super big Vapor chamber+ Multilayer graphite sheets+Boron Nitride film)

Sensors: Proximity sensor | 360° Ambient light sensor | Accelerometer | Gyroscope | Electronic compass | color temperature sensor | IR Blaster| Flicker sensor

6.67-'' AMOLED DotDisplay20:9, 2712x1220446 ppiRefresh rate: 120HzTouch sampling rate: Up to 480Hz TrueColor display: JNCD≈0.37, Delta E≈0.66Contrast ratio: 5,000,000:1Brightness: 500 nits (typ) 900 nits peak brightness 4096 level brightness adjustmentHDR10+CorningGorillaGlass 5Supports True DisplaySupports Reading modeSupports Sunlight mode360° ambient light sensors

Dimensity 8100-Ultra5nm power-efficient manufacturing processUp to 2.85GHzCPU: 4x Gold cores (A78-based), 2.85GHz 4x Silver cores (A55-based), 2.0GHzGPU: Mali-G610 MC6

5000mAh battery (typ)Supports 120W wired turbo charging19mins to 100%Inbox 120W chargerUSB type-cXiaomi AdaptiveCharge

Liquid cooling system (Super big Vapor chamber+ Multilayer graphite sheets+Boron Nitride film)

Sensors: Proximity sensor | 360° Ambient light sensor | Accelerometer | Gyroscope | Electronic compass | color temperature sensor | IR Blaster| Flicker sensor

Camera description: Rear

6.67” AMOLED DotDisplay20:9, 2712x1220446 ppiRefresh rate: 120HzTouch sampling rate: Up to 480HzAdaptiveSync display: 30Hz/60Hz/90Hz/120HzContrast ratio: 5,000,000:1Over 68 billion colorsColor gamut: DCI-P3Brightness: 500 nits (typ) 900 nits peak brightness 4096 level brightness adjustmentHDR10+Dolby VisionCorningGorillaGlass 5Supports Adaptive HDRSupports True DisplaySupports Adaptive reading modeSupports Sunlight modeSGS Low Visual Fatigue Certification360° ambient light sensors

Snapdragon 8+ Gen 14nm power-efficient manufacturing processUp to 3.2GHz, with Armv9 Cortex-X2 technology CPU: 1x Prime core (X2-based), 3.2GHz 3x Gold cores (A710-based), 2.75GHz 4x Sliver cores (A510-based), 2.0GHzGPU: Qualcomm Adreno GPU7th Gen Qualcomm AI Engine

5000mAh battery (typ)Supports 120W wired turbo charging19mins to 100%Inbox 120W chargerUSB type-cXiaomi AdaptiveCharge

Liquid cooling system (Super big Vapor chamber+ Multilayer graphite sheets+Boron Nitride film)

Sensors: Proximity sensor | 360° Ambient light sensor | Accelerometer | Gyroscope | Electronic compass | color temperature sensor | IR Blaster| Flicker sensor

6.67” AMOLED DotDisplay20:9, 2712x1220446 ppiRefresh rate: 120HzTouch sampling rate: Up to 480HzAdaptiveSync display: 30Hz/60Hz/90Hz/120HzContrast ratio: 5,000,000:1Over 68 billion colorsColor gamut: DCI-P3Brightness: 500 nits (typ) 900 nits peak brightness 4096 level brightness adjustmentHDR10+Dolby VisionCorningGorillaGlass 5Supports Adaptive HDRSupports True DisplaySupports Adaptive reading modeSupports Sunlight modeSGS Low Visual Fatigue Certification360° ambient light sensors

Snapdragon 8+ Gen 14nm power-efficient manufacturing processUp to 3.2GHz, with Armv9 Cortex-X2 technology CPU: 1x Prime core (X2-based), 3.2GHz 3x Gold cores (A710-based), 2.75GHz 4x Sliver cores (A510-based), 2.0GHzGPU: Qualcomm Adreno GPU7th Gen Qualcomm AI Engine

5000mAh battery (typ)Supports 120W wired turbo charging19mins to 100%Inbox 120W chargerUSB type-cXiaomi AdaptiveCharge

Liquid cooling system (Super big Vapor chamber+ Multilayer graphite sheets+Boron Nitride film)

Sensors: Proximity sensor | 360° Ambient light sensor | Accelerometer | Gyroscope | Electronic compass | color temperature sensor | IR Blaster| Flicker sensor

6.67” AMOLED DotDisplay20:9, 2712x1220446 ppiRefresh rate: 120HzTouch sampling rate: Up to 480HzAdaptiveSync display: 30Hz/60Hz/90Hz/120HzContrast ratio: 5,000,000:1Over 68 billion colorsColor gamut: DCI-P3Brightness: 500 nits (typ) 900 nits peak brightness 4096 level brightness adjustmentHDR10+Dolby VisionCorningGorillaGlass 5Supports Adaptive HDRSupports True DisplaySupports Adaptive reading modeSupports Sunlight modeSGS Low Visual Fatigue Certification360° ambient light sensors

Snapdragon 8+ Gen 14nm power-efficient manufacturing processUp to 3.2GHz, with Armv9 Cortex-X2 technology CPU: 1x Prime core (X2-based), 3.2GHz 3x Gold cores (A710-based), 2.75GHz 4x Sliver cores (A510-based), 2.0GHzGPU: Qualcomm Adreno GPU7th Gen Qualcomm AI Engine

5000mAh battery (typ)Supports 120W wired turbo charging19mins to 100%Inbox 120W chargerUSB type-cXiaomi AdaptiveCharge

Liquid cooling system (Super big Vapor chamber+ Multilayer graphite sheets+Boron Nitride film)

Sensors: Proximity sensor | 360° Ambient light sensor | Accelerometer | Gyroscope | Electronic compass | color temperature sensor | IR Blaster| Flicker sensor

MediaTek Processor, 1900 mAh Big Battery, FM Radio, MP3/ MP4 Player, Bluetooth: v3.0

3.5mm Audio Jack + microSD Slot Expandable up to 32GB

GSM Quad-Band 850 / 900 / 1800 / 1900 (SIM 1 & SIM 2)

2.4" TFT Screen Display; VGA Camera (640 x 480 pixels) w/ LED Flash + Video

MediaTek Processor, 1900 mAh Big Battery, FM Radio, MP3/ MP4 Player, Bluetooth: v3.0

3.5mm Audio Jack + microSD Slot Expandable up to 32GB

Unlocked cell phones are compatible with GSM carriers like AT&T and T-Mobile as well as with GSM SIM cards (e.g. H20, Straight Talk, and select prepaid carriers). Unlocked cell phones will not work with CDMA Carriers like Sprint, Verizon, Boost or Virgin, Pure Talk USA.

16GB Internal memory 512MB RAM Micro SD up to 64GB, 1.3GHz Quadcore processor with Mali-400 GPU

GSM Quad band, 3G (850/1900/2100) Compatible with GSM networks. Not compatible with new AT&T or Cricket activations or with CDMA Networks like Verizon, Sprint, and Boost Mobile.

MediaTek Quad Core 1.3 GHz Processor with Mali-400 GPU, 8GB Internal memory 1GB RAM Micro SD up to 64GB

GSM Quad Band 4G HSPA+ (850/1700/1900): US Compatibility Nationwide on all GSM Networks including AT&T, T-Mobile, Cricket, MetroPCS, Straight Talk, Pure Talk USA and others

【Global 4G Network & Frequency Band】Global version ,GSM Quad band 2G:850/900/1800/1900MHz, 3G: 1/2/4/5/8MHz, 4G: FDD1/2/3/4/5/7/8/12/17/19/20 TDD40. Supports most operators in the United States, T-mobile,Straight talk ,metro pcs,But does not support: ATT, Verizon, Sprint, Boost, PagePlus. Please contact us if you have any questions.

【16MP + 8MP Dual Real Camera 】Large screen cell phone K9 with 16MP + 8MP Dual Real Camera capture precious moments as wonderful memories with outstanding clarity for you.

【OUKITEL Official Service】OUKITEL K9 Unlocked Android phones Support 12-month product warranty, long-term online technical support, and 7*24 hours of online customer service. is cheaper price comparing with other brands, but great quality.A decent gift for family, girl& boy friends, or ourselves. When you choose OUKITEL Smartphone, you are choosing a safe shopping experience and dedicated customer service.

3,700 mAh Monster battery (upto 3 Days with Standard Usage), built in Fingerprint Sensor

4G LTE, (2/4/7/12/17), 4G HSPA+ (850/1700/1900/2100). GSM Quad band: US compatibility

Nationwide on all GSM Networks including AT&T, T-Mobile, Cricket, MetroPCS, Straight Talk, and others. Will NOT Work with CDMA Carriers like Verizon, Sprint, Boost, Etc.

3.5mm Audio Jack + microSD Slot Expandable up to 32GB

GSM Quad band 2G (850/900/1800/1900): compatibility. Nationwide on 2G carriers like Straight Talk, Simple Mobile, or any other carrier that accepts a 2G ONLY GSM Sim Card. Will NOT work with 3G only providers - NO AT&T, NO T-Mobile, NO CDMA Carriers (Verizon, Sprint, Boost, PagePlus)

Built in flash light, MP3/MP4, FM a radio and VGA Camera

GSM Quad band 2G (850/900/1800/1900): compatibility Nationwide on T-Mobile, Straight Talk, Simple Mobile, or any other carrier that accepts a 2G GSM Sim Card. Will NOT work with 3G only providers like ATT nor any CDMA Carriers (Verizon, Sprint, Boost, PagePlus)

Please refer the user manual below for better use

Built in flash light, MP3/MP4, FM a radio and VGA Camera

GSM Quad band 2G (850/900/1800/1900): compatibility Nationwide on T-Mobile, Straight Talk, Simple Mobile, or any other carrier that accepts a 2G GSM Sim Card. Will NOT work with 3G only providers like ATT nor any CDMA Carriers (Verizon, Sprint, Boost, PagePlus).Please refer the user manual below for better use

Great battery performance with a 2400 mAh battery, browse, stream music, watch video, and play games at blazing speed, WiFi networking with WiFi mobile hotspot and tethering capabilities, GPS for navigation and location services,

4G LTE (2,4,7,12,17), 3G HSPA (850,1700,1900), GSM Quad band(850,900,1800,1900): US compatibility on all GSM Networks including AT&T, T Mobile, Straight Talk, Cricket, Consumer Cellular, MetroPCS, Net10, Pure Talk and others. No contracts required; International version, available in Canada, Mexico, Jamaica, Venezuela, Argentina, and other 190 countries and regions.

16GB Internal memory 512MB RAM Micro SD up to 64GB, 1.3GHz Quadcore processor with Mali-400 GPU

GSM Quad band, 3G (850/1900/2100) Compatible with GSM networks. Not compatible with CDMA networks like Verizon, Sprint and Boost mobile

Helio G85 octa-core processor CPU: 8-core processor, the highest frequency is 2.0GHz GPU: Mali-G52 MP2

50MP main camera f/1.8 4-in-1 pixel binning 2MP depth camera f/2.4 Rear camera video recording 1080p | 1920x1080 at 30fps 720p | 1280x720 at 30fps / Front Camera 5MP

10W in-box charger USB Micro USB Support 18w (not included) Battery 5000mAh (typ) Rear fingerprint sensor AI face unlock

GPS | AGPS | GLONASS | Beidou | Galileo GPS | AGPS | 3.5mm headphone jack Proximity sensor | Ambient light sensor | Accelerometer

3000 mAh Monster battery that last up to 3 days with standard usage and over 30 days on stand by

4G LTE, (2/4/5/7/12/17), 4G HSPA+ (850/1700/1900/2100). GSM Quad Band: US compatibility Nationwide on GSM Networks including AT&T, T-Mobile, metropcs, and others please check with carriers

Calculator, calendar, FM radio, Bluetooth and alarm.

2G Quad band (850/900/1800/1900 MHz) compatible with all GSM Networks worldwide, including T-Mobile, Straight Talk, and many others.

Dual Sim LTE 5G FDD Sub6 N1(2100), N3(1800), N5(850), N7(2600), N8(900), N20(800), N28(700), N66(AWS-3) 5G TDD Sub6 N38(2600), N40(2300), N41(2500), N78(3500) 4G FDD LTE B1(2100), B3(1800), B5(850), B7(2600), B8(900), B20(800), B28(700) 4G TDD LTE B38(2600), B40(2300), B41(2500) / 3G Quad Band / 2G Quad Band

6.6 inches, 104.9 cm2 (~80.2% screen-to-body ratio) 1080 x 2408 pixels, 20:9 ratio (~400 ppi density)

Location Technology GPS, Glonass, Beidou, Galileo Earjack 3.5mm Stereo Wi-Fi 802.11 a/b/g/n/ac 2.4+5GHz

Accelerometer, Light Sensor, Proximity Sensor

Fingerprint Scanner IP67, accelerometer, proximity, compass

Manufacturer : Samsung Electronics

Dual Sim LTE 4G FDD LTE B1(2100), B3(1800), B5(850), B7(2600), B8(900), B20(800), B28(700) 4G TDD LTE B38(2600), B40(2300), B41(2500) / 3G Quad Band / 2G Quad Band

Resolution (Main Display) ‎720 x 1600 (HD+)‎ Technology (Main Display) PLS LCD

Location Technology GPS, Glonass, Beidou, Galileo Earjack 3.5mm Stereo Wi-Fi 802.11 a/b/g/n/ac 2.4+5GHz

Accelerometer, Light Sensor, Proximity Sensor

Dual Sim LTE 5G FDD Sub6 N1(2100), N3(1800), N5(850), N7(2600), N8(900), N20(800), N28(700), N66(AWS-3) 5G TDD Sub6 N38(2600), N40(2300), N41(2500), N78(3500) 4G FDD LTE B1(2100), B3(1800), B5(850), B7(2600), B8(900), B20(800), B28(700) 4G TDD LTE B38(2600), B40(2300), B41(2500) / 3G Quad Band / 2G Quad Band

6.6 inches, 104.9 cm2 (~80.2% screen-to-body ratio) 1080 x 2408 pixels, 20:9 ratio (~400 ppi density)

Location Technology GPS, Glonass, Beidou, Galileo Earjack 3.5mm Stereo Wi-Fi 802.11 a/b/g/n/ac 2.4+5GHz

Accelerometer, Light Sensor, Proximity Sensor

Fingerprint Scanner IP67, accelerometer, proximity, compass

SIM 1 + SIM 2 + MicroSD 5G FDD Sub6 N1(2100), N3(1800), N5(850), N7(2600), N28(700), N66(AWS-3) 5G TDD Sub6 N40(2300), N41(2500), N78(3500) 4G FDD LTE B1(2100), B3(1800), B5(850), B7(2600), B8(900), B20(800), B28(700) 4G TDD LTE B38(2600), B40(2300), B41(2500) / 3G Quad Band / 2G Quad Band

6.6 inches, 104.9 cm2 (~80.2% screen-to-body ratio) 1080 x 2408 pixels, 20:9 ratio (~400 ppi density)

Location Technology GPS, Glonass, Beidou, Galileo Earjack 3.5mm Stereo Wi-Fi 802.11 a/b/g/n/ac 2.4G+5GHz, VHT80

Accelerometer, Light Sensor, Proximity Sensor Earjack 3.5mm Stereo Bluetooth Version Bluetooth v5.2

Fingerprint (side-mounted), accelerometer, proximity, compass. Support Micro SD Up to 1TB

Manufacturer : Samsung

2G GSM Quad band 850/900/1800/1900- SIM 1 & SIM 2, 3G bands HSDPA 850/1900/2100. LTE Cat4

4G Speed LTE : US compatibility Nationwide on all GSM Networks including AT&T, T-Mobile,Cricket, Straight Talk and more....... Hotspot, WiFi Direct, GPS, FM Radio, Support Bluetooth 4.0, GPS With A-GPS, Dimensions 144.3 x 72.5 x 10.3 mm, weight: 153 g (5.40 oz), Removable Li-Po 2000 mAh battery

【Ultra Long Battery Life】: The mobile phone is equipped with a 16800mAh large capacity rechargeable battery, with low power consumption and long standby time, avoiding frequent charging. Power bank function: It has an extra USB port to charge other electronic devices, which is very useful in emergency situations.

【Big Flashlight】: Dual LED light one button flashlight, longer service life, wider and farther lighting range. Good helper for the evening, voice changing function: male voice, female voice, children's voice exchange, very fun.

SOS Key: If you're in an emergency, you can use the SOS feature to get immediate help. There are also 9 groups of family numbers, and 9 emergency contacts can be set. You don't need to dig through the address book, you can dial with one key.

Ultra Long Battery Life: The mobile phone is equipped with a 6800mAh large capacity rechargeable battery, which has a long standby time, and a one button flashlight with LED light, which has a wider and farther lighting range.

Unlocked cell phones are compatible with GSM carriers but are not compatible with CDMA Carriers.

Sleek Design, Tough As Ever: The Cat S42 is the unique blend of our thinnest and sleekest ever design whilst still being tough. Expose it to all weathers and conditions or just slip it in your pocket and forget about it. - Best In Class Camera: The Cat S42's camera is best-in-class. With fast and accurate focusing and great low-light performance, it's the best camera available on a rugged phone.

Truly Rugged Phone: Despite its lightweight, pocket-friendly design, the Cat S42 is a smartphone with military grade toughness. Cat phones set the standards in rugged and the Cat S42 is no exception. Built to last, it is drop tested repeatedly on to concrete from a height of up to 1.5m and can be completely submerged in water. Plus, its screen is protected from cracks by the latest Gorilla Glass, so with the Cat S42 h+, accidents don't happen.

Inside the Box: Phone (battery Inside) + USB Cable + Manual + Car charger (Wall charger NOT included)

【SOS KEY ADVANCED PHONE】This phone comes with SOS button. If you encounter an emergency, you can use the SOS function to get immediate help, SOS emergency call, you can set up 9 emergency contacts, and you can dial with one key without flipping through the address book.

【POWERFUL FUNCTIONS】Support access to internet, browser, video player, radio, camera, game, e book, flashlight, video recorder, voice recorder, calendar, alarm clock, calculator and other functions. It has an extra USB port to charge other electronic devices, can be used as power bank, which is very useful in emergency situations. Dual LED light one button flashlight is good helper for the evening. Voice changing function includes male voice, female voice, children's voice exchange.

Octa-core (2x2.2 GHz Cortex-A76 & 6x2.0 GHz Cortex-A55) Mali-G57 MC2

Size (Main_Display) 164.2mm (6.5") Resolution (Main Display) 1080 x 2340 (FHD+) Technology (Main Display) Super AMOLED Color Depth (Main Display) 16M

Location Technology GPS, Glonass, Beidou, Galileo Earjack 3.5mm Stereo Wi-Fi 802.11 a/b/g/n/ac 2.4+5GHz

Accelerometer, Fingerprint Sensor, Gyro Sensor, Geomagnetic Sensor, Light Sensor, Virtual Proximity Sensing

Rear Camera - Resolution (Multiple) 50.0 MP + 5.0 MP + 2.0 MP Rear Camera - F Number (Multiple) F1.8 , F2.2 , F2.4 Front Camera - Resolution 13.0 MP

USB Interface USB Type-C USB Version USB 2.0 Location Technology GPS, Glonass, Beidou, Galileo, QZSS Earjack 3.5mm Stereo MHL No Wi-Fi 802.11 a/b/g/n/ac 2.4G+5GHz, VHT80 Wi-Fi Direct Yes Bluetooth Version Bluetooth v5.3 NFC Yes PC Sync. Smart Switch (PC version)

Support wireless FM, suitable for seniors to listen to the radio.

Can be used as a mobile power source; support games, e-books, etc.Support wireless FM, suitable for seniors to listen to the radio.