Compare phones
T-Mobile Sidekick 4G
SGH-T839| Global Score | |
| 44.2 | 65.8 |
| Basic Information | |
| T-Mobile | Xiaomi |
| Android 2.2 | Android 6.0 Marshmallow |
| -- | 2016-11-11 |
| 5.00 x 2.42 x 0.60 inches | 5.51 x 2.77 x 0.33 inches |
| 5.70 ounces | 4.64 ounces |
| -- | 16 777 216 |
| -- | Metal |
| $ 100.00 | $ 104.00 |
| Display / Screen | |
| 3.5 inches | 5 inches |
| 480 x 800 pixels | 1280 x 720 pixels (HD) |
| TFT | IPS LCD |
| 267 pixels per inch | 294 pixels per inch |
| Capacitive, Multi-touch | No touch screen |
| 7.8 | 7.2 |
| Performance | |
| Samsung Exynos 3 chipset | Qualcomm Snapdragon 425 8917 chipset |
| ARM Cortex-A8 (Single-Core 1000 MHz) processor | ARM Cortex-A53, 64-bit, 28 nm (Quad-Core 1400 MHz) processor |
| 512 MB RAM | 2 GB RAM |
| PowerVR SGX540 (200 MHz) GPU | Adreno 308 GPU |
| 7.47 | 8.28 |
| Storage | |
| -- | 16 GB internal memory |
| microSD, microSDHC (up to 32 GB) external memory slot | microSDXC (up to 128 GB) external memory slot |
| 1.32 | 6.72 |
| Camera | |
| 3.00 MP + 0.30 MP | 13.00 MP + 5.00 MP |
| -- | f/2.20 aperture |
| 720 x 480 (30 fps) video resolution | 1920 x 1080 (30 fps) (Full HD) video resolution |
| 6.05 | 8.8 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| HSPA+ (4G), HSDPA, HSPA, HSUPA, UMTS, EDGE and GSM | LTE-A (4G), LTE (4G) and HSPA |
| SIM | Micro SIM |
| 4.5 | 6.1 |
| Battery Life | |
| 1500mAh Li-Ion Battery | 3120mAh Li - Ion Battery |
| Removable Battery | Non-Removable Battery |
| 456 hours standby time 6.5 hours talk time | -- |
| 3.28 | 5.12 |
| Other Features | |
| Bluetooth 3.0 | Bluetooth 4.1 |
| GPS | GPS |
| Accelerometer, Light Sensor and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| -- | FM Radio |
Comparison review
The Xiaomi Redmi 4a has a score of 65.8, which is much better than the T-Mobile Sidekick 4G's 44.2 score. Both of these devices work with Android OS, but Xiaomi Redmi 4a has a more recent 6.0 Marshmallow version while T-Mobile Sidekick 4G has Android 2.2 version, providing the user lots of additional features and performance improvements. Xiaomi Redmi 4a is a somewhat lighter and way thinner device than T-Mobile Sidekick 4G.
The Xiaomi Redmi 4a features a better performance than T-Mobile Sidekick 4G, because although it has doesn't have an extra graphics processor, it also counts with more RAM and a higher number of cores. The T-Mobile Sidekick 4G features a bit more vivid screen than Xiaomi Redmi 4a, although it has a really smaller display, a quite lower pixels number in each display inch and a way worse 800 x 480px resolution.
Xiaomi Redmi 4a counts with much more storage to install games and applications than T-Mobile Sidekick 4G, because it has a slot for an external memory card that admits a maximum of 128 GB. Xiaomi Redmi 4a has a lot better camera than T-Mobile Sidekick 4G, because it has a much higher (Full HD) video quality and a lot higher 13 MP resolution back-facing camera.
Xiaomi Redmi 4a has a much longer battery lifetime than T-Mobile Sidekick 4G, because it has a 3120mAh battery size.
Xiaomi Redmi 4a costs a little more money than T-Mobile Sidekick 4G, but it's still a good choice, because you can get a lot more for that extra money.
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