Nokia c1 01 mobile is agood phone it has a single sim option and it has memory option expandable upto 32gb this is great one why because some android mobiles are support 32gb but nokia c1 01 supports 32gb memory card it has suppots gprs facebook twitter etc apps it has anokia store to download games and apps I used this mobiles above 4years this has no problem at all it gives 3days battery life for we charge bull battery at one time we edit photos excallently and download games apps songs videos etc. This good one in old nokia phones its body pannel is very strong it protects the mobile inner parts