Samsung Galaxy A21s (SM-A217F) — BTU
Samsung Galaxy A21s Released 2020, June 02 | 192g, 8.9mm thickness | Android 10, up to Android 12, One UI 4.1 | 32GB/64GB/128GB storage, microSDXC | PLS LCD | 48 MP, f/2.0, 26mm (wide), 1/2.0", 0.8µm, PDAF 8 MP, f/2.2, 123˚ (ultrawide), 1/4.0", 1.12µm 2 MP (macro) Auxiliary lens | Li-Po 5000 mAh
Samsung Galaxy A21s Network Specifications
| Speed | HSPA, LTE |
| 4G | 1, 2, 3, 5, 7, 8, 20, 28, 38, 40, 41 |
| 3G | HSDPA 850 / 900 / 1900 / 2100 |
| 2G | GSM 850 / 900 / 1800 / 1900 |
| Technology | GSM / HSPA / LTE |
Samsung Galaxy A21s body Specifications
| SIM | · Nano-SIM · Nano-SIM + Nano-SIM |
| Build | Glass front, plastic frame, plastic back |
| Weight | 192 g (6.77 oz) |
| Dimensions | 163.7 x 75.3 x 8.9 mm (6.44 x 2.96 x 0.35 in) |
Samsung Galaxy A21s MISC Specifications
| SAR EU | 0.42 W/kg (head) 1.54 W/kg (body) |
| Colors | Black, White, Blue, Red |
Samsung Galaxy A21s display Specifications
| Resolution | 720 x 1600 pixels, 20:9 ratio (~270 ppi density) |
| Size | 6.5 inches, 102.0 cm 2 (~82.8% screen-to-body ratio) |
| Type | PLS LCD |
Samsung Galaxy A21s Sound Specifications
| 3.5mm jack | Yes |
| Loudspeaker | Yes |
Samsung Galaxy A21s Platform Specifications
| GPU | Mali-G52 |
| CPU | Octa-core (4x2.0 GHz Cortex-A55 & 4x2.0 GHz Cortex-A55) |
| Chipset | Exynos 850 (8 nm) |
| OS | Android 10, upgradable to Android 12, One UI 4.1 |
Samsung Galaxy A21s Battery Specifications
| Charging | 15W wired |
| Battery | Li-Po 5000 mAh |
Samsung Galaxy A21s memory Specifications
| Internal | 32GB 2GB RAM, 32GB 3GB RAM, 32GB 4GB RAM, 64GB 3GB RAM, 64GB 4GB RAM, 64GB 6GB RAM, 128GB 2GB RAM, 128GB 3GB RAM, 128GB 4/6GB RAM |
| Card slot | microSDXC (dedicated slot) |
Samsung Galaxy A21s Main Camera Specifications
| Video | 1080p@30fps |
| Features | LED flash, panorama, HDR |
| Camera | 48 MP, f/2.0, 26mm (wide), 1/2.0", 0.8µm, PDAF 8 MP, f/2.2, 123˚ (ultrawide), 1/4.0", 1.12µm 2 MP (macro) Auxiliary lens |
BTU Region Firmware Info
BTU - United KingdomA CSC (Consumer Software Customization) code ties a Samsung firmware build to the country and carrier it was released for, controlling branding, available languages and which OTA updates a device receives. The BTU code is used in United Kingdom by O2, Orange, Life Mobile, EE/T-Mobile, Virgin, Vodafone, BT Mobile, H3G, Asda, Meteor, Tesco Mobile Ireland, Talkmobile, TalkTalk, with one Samsung Galaxy A21s firmware version known so far.
Samsung Galaxy A21s BTU Firmware ArchiveOfficial Samsung Galaxy A21s firmware for the United Kingdom BTU region, including BL, AP, CP, CSC and HOME_CSC packages for Odin flashing.
Samsung Galaxy A21s Combination & Special FilesCombination and service files for the Samsung Galaxy A21s (SM-A217F) — authorized repair, FRP reset after service, and diagnostics.
| Device Mobile | Version | Bit - SW REV | FA | Change list | Updated | Status |
|---|---|---|---|---|---|---|
BTU Firmware FAQ
Which carriers use the BTU CSC on the Samsung Galaxy A21s?+
The BTU CSC is used by O2, Orange, Life Mobile, EE/T-Mobile, Virgin, Vodafone, BT Mobile, H3G, Asda, Meteor, Tesco Mobile Ireland, Talkmobile, and TalkTalk in United Kingdom. Flash the BTU firmware only if your device was sold through one of these carriers.
How many Samsung Galaxy A21s firmware versions are available for the BTU region?+
Currently one known Samsung Galaxy A21s firmware version is available for the BTU (United Kingdom) region.
How is the BTU CSC different from other region codes?+
Samsung ties every firmware build to one of roughly 599 CSC (Consumer Software Customization) codes, each tied to a specific country and carrier. BTU is the code for United Kingdom (O2, Orange, Life Mobile, EE/T-Mobile, Virgin, Vodafone, BT Mobile, H3G, Asda, Meteor, Tesco Mobile Ireland, Talkmobile, and TalkTalk) — flashing a different CSC can change your carrier branding, available languages and which OTA updates you receive.