Looking for an affordable Android phone? BLU offers several options, and the S91 and G51 Plus are two popular contenders. But which one delivers the best value? This comprehensive comparison dives deep into their specs and features to help you decide.
🏆 Quick Verdict
The BLU G51 Plus generally edges out the S91 thanks to its more modern CPU architecture and likely improved efficiency. While the S91 boasts a slightly more powerful CPU core, the G51 Plus's overall performance and potential for longer battery life make it the better choice for most users.
| Network |
|---|
| 2G bands | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 |
| 3G bands | HSDPA 850 / 900 / 1700 / 1900 / 2100 | HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 |
| 4G bands | 1, 2, 3, 4, 5, 7, 12, 13, 17, 28, 66 | 1, 2, 3, 4, 5, 7, 12, 17, 28 |
| Speed | HSPA, LTE | HSPA, LTE |
| Technology | GSM / HSPA / LTE | GSM / HSPA / LTE |
| Launch |
|---|
| Announced | 2022, June 24 | 2021, May 22. Released 2021, May 22 |
| Status | Available. Released 2022, June 24 | Discontinued |
| Body |
|---|
| Dimensions | 164.8 x 76.3 x 8.9 mm (6.49 x 3.00 x 0.35 in) | 165 x 76.5 x 9.3 mm (6.50 x 3.01 x 0.37 in) |
| SIM | Nano-SIM + Nano-SIM | Nano-SIM + Nano-SIM |
| Weight | 202 g (7.13 oz) | 200 g (7.05 oz) |
| Display |
|---|
| Resolution | 720 x 1600 pixels, 20:9 ratio (~270 ppi density) | 720 x 1600 pixels, 20:9 ratio (~270 ppi density) |
| Size | 6.5 inches, 102.0 cm2 (~81.1% screen-to-body ratio) | 6.5 inches, 102.0 cm2 (~80.8% screen-to-body ratio) |
| Type | IPS LCD | IPS LCD |
| Platform |
|---|
| CPU | Octa-core (4x2.0 GHz Cortex-A53 & 4x1.5 GHz Cortex-A53) | Octa-core 1.6 GHz Cortex-A55 |
| Chipset | Mediatek MT6762G Helio G25 (12 nm) | - |
| GPU | PowerVR GE8320 | - |
| OS | Android 11 | Android 11 |
| Memory |
|---|
| Card slot | microSDXC | microSDXC |
| Internal | 128GB 4GB RAM | 64GB 3GB RAM |
| | - | eMMC 5.1 |
| Main Camera |
|---|
| Features | LED flash, HDR, panorama | LED flash, HDR, panorama |
| Single | 13 MP | 8 MP |
| Triple | 13 MP, (wide), PDAF
0.3 MP (macro)
Auxiliary lens | 13 MP
0.3 MP (macro)
Auxiliary lens |
| Video | 1080p@30fps | 1080p@30fps |
| Selfie camera |
|---|
| Single | 13 MP | 8 MP |
| Video | 1080p@30fps | 720p@30fps |
| Sound |
|---|
| 3.5mm jack | Yes | Yes |
| 35mm jack | Yes | Yes |
| Loudspeaker | Yes | Yes |
| Comms |
|---|
| Bluetooth | 5.0, A2DP, LE | 4.1, A2DP, LE |
| NFC | No | No |
| Positioning | GPS | GPS |
| Radio | FM radio | FM radio |
| USB | USB Type-C 2.0, OTG | microUSB 2.0 |
| WLAN | Wi-Fi 802.11 a/b/g/n, Wi-Fi Direct | Wi-Fi 802.11 b/g/n, Wi-Fi Direct |
| Features |
|---|
| Sensors | Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass | Fingerprint (rear-mounted), accelerometer, proximity |
| Battery |
|---|
| Type | Li-Po 5000 mAh | Li-Po 4000 mAh |
| Misc |
|---|
| Colors | Black, Green | Black, Blue, Red, Green |
| Price | About 170 EUR | About 110 EUR |
BLU S91
- Slightly higher CPU clock speed on some cores
- Potentially slightly better gaming performance at lower settings
- Older CPU architecture (Cortex-A53)
- Likely shorter battery life
- Potentially less responsive UI
BLU G51 Plus
- More modern CPU architecture (Cortex-A55)
- Likely better battery life
- Smoother overall performance
- Potentially improved image processing
- Slightly lower CPU clock speed on some cores
- Gaming performance may be slightly lower at higher settings
Display Comparison
Both phones likely feature similar display technology (likely IPS LCD) and resolution (likely HD+). Screen size is likely comparable, around 6.5 inches. The G51 Plus *might* have a slightly brighter display, but this is difficult to confirm without specific testing data. Color accuracy will likely be average for this price range.
Camera Comparison
Camera specs are often similar on budget BLU phones. Both likely feature a multi-lens setup with a primary sensor around 13MP-48MP, an ultrawide lens, and a depth sensor. Image quality will be adequate in good lighting conditions, but expect noise and limited detail in low light. The G51 Plus *might* have slightly improved image processing due to its newer chipset.
Performance
The BLU S91 uses a Mediatek Helio G25, featuring Cortex-A53 cores. The BLU G51 Plus utilizes a newer Cortex-A55 based CPU. While the S91 has a slightly higher clock speed on some cores (2.0 GHz vs 1.6 GHz), the A55 architecture in the G51 Plus is more efficient and generally provides better overall performance and responsiveness. Expect smoother multitasking and app loading on the G51 Plus.
Battery Life
Battery capacity is likely around 5000mAh for both devices. However, the G51 Plus's more efficient Cortex-A55 CPU should translate to better battery life in real-world usage. Expect a full day of moderate use from both, but the G51 Plus may stretch that further.
Buying Guide
The BLU S91 is a good option for users prioritizing a slightly more powerful CPU for basic tasks and gaming at lower settings. The BLU G51 Plus is ideal for those seeking a smoother, more efficient experience with a focus on everyday use and potentially better battery life.
Frequently Asked Questions
❓ What does Cortex-A53 vs Cortex-A55 mean?
Cortex-A55 is a newer CPU architecture that is more efficient than Cortex-A53. This means it can perform similar tasks using less power, resulting in better battery life and potentially smoother performance.
❓ Are these phones good for gaming?
Both phones are entry-level devices and not ideal for demanding games. You can play less intensive games at lower settings, but don't expect high frame rates or graphics quality.
