Apple iPhone 4S 8GB vs Oppo A91
| Type | Touch | Touch |
| Dimensions | 115.20 x 58.60 x 9.30 mm | 160.20 x 73.30 x 7.90 mm |
| Weight | 140.00 g | 172.00 g |
| Display size | 3.50" | 6.40" |
| Display | Color / IPS TFT 16M colors 640 x 960 px (3.50") 330 ppi | Color / AMOLED 16M colors 1080 x 2400 px (6.40") 411 ppi |
| Display protection | Corning Gorilla Glass Buy screen protector
| |
| Additional display | ||
| Protection of the secondary display | ||
| Talk time (max.) | 2G: 840 min. (14.0 h) 3G: 480 min. (8.0 h) | |
| Stand-by (max.) | 2G: 200 h. (8.3 days) 3G: 200 h. (8.3 days) | |
| Standard battery | Li-Ion Buy powerbank
| Li-Po 4025 mAhBuy powerbank
|
| Quick battery charging | VOOC 3.0 | |
| Wireless battery charging | ||
| Internal memory | 8 GB | 128 GB |
| RAM memory | 8 GB | |
| Memory cards | microSD, microSDHC, microSDXC up to 256 GBBuy memory card | |
| Operating system | iOS 5 | Android 9.0 Pie |
| Interface | - | ColorOS 6.1.2 |
| Processor | Apple A5 | MediaTek Helio P70 MT6771T |
| Processor clock | 800 MHz | 2100 MHz |
| GPU | PowerVR SGX543 MP2 | ARM Mali-G72 MP3 |
| Touchscreen | ||
| DualSIM | ||
| SIM cards standard | DualSIM(nanoSIM, nanoSIM) | |
| DualSIM mode | nd | dual standby |
| Hybrid DualSIM | nd | |
| Announced | 4Q 2019 | |
| Other names | - | PCPM00 |
| GSM frequencies | 850 900 1800 1900 | 850 900 1800 1900 |
| UMTS | 900 1900 2100 | 850 1700 1900 2100 |
| LTE standard | ||
| Standard 5G | ||
| CDMA | 850 1900 | 850 |
| Standard TD-SCDMA | 1900 2000 | |
| UMA |

