| OS |
Android 6.0 (Marshmallow), Walton OS with Bengali language suite & Dual SIM 3G setups |
| Chipset |
Spreadtrum SC7731C (28 nm 1.2GHz Quad-Core Cortex-A7 & ARM Mali-400 MP2 GPU @ 500MHz with 720p Hardware Video Decoder) |
| RAM |
512MB RAM |
| Storage |
4GB Massive Internal Storage (2.2GB User Accessible) |
| Display |
4.5 inches • 480 x 854 pixels (16:9, 218 ppi) |
| Main camera |
5.0 MP Main (Autofocus, LED flash, 720p@30fps video) |
| Selfie camera |
0.3 MP VGA (480p video for Video Calling) |
| Battery |
1700 mAh User-Replaceable / Removable Battery (Powers over 10 hours calling / 300 hours standby!), Micro-USB 2.0 charging • Removable Li-Ion 1700 mAh (6.46 Wh) |
| Weight |
125 g (4.41 oz - Ultra-Featherweight 125g!) |
Latest Walton Primo EF4 user agents:
| User Agent |
Browser | Platform |
| Mozilla/5.0 (Linux; Android 6.0; Primo EF4 Build/Primo_EF4_S007_05092016; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/87.0.4280.141 Mobile Safari/537.36 GSA/5.11.35.19.arm |
Google Search App 5 | Android 6Primo EF4 |