Features of Celkon Diamond U 4GGeneral Network 4G VoLTE Micro SIM Yes Dual SIM Yes Nano SIM No Touch-screen Yes Display Screen Size 5 inch Screen Resolution 1280 X 720 pixels Memory Internal Memory 8 GB External Memory 32 GB RAM 1 GB Camera Primary Camera 8 MP Secondary Camera 3 MP Flash Yes Connectivity WIFI Yes Radio Yes GPRS Yes NFC Yes USB Yes Bluetooth Version 3.0 With A2DP OS OS Android OS Version Android 6.0 (M) Processor Processor Type Quad Core Processor Speed 1.3 Ghz Battery Battery Type Li-ion Battery Capacity 2500 mAh Sound 3.5mm Jack Yes Loudspeaker Yes Body Type Bar