speedo meter dal do plz

Unknown source not available or what's video calling

Plz Samsung z2 conmpres call

Message and sim services cant operate,i cannot use an mpesa or send and receive messages

I don't know what to do now with this samsung z2, i want to download whatsapp on this phone i still can't even though i had to get information through internet but it still not working for me. It says i must create samsung account and i did exactly n i went to this tizen store to download whatsapp but it keeps on loading for years and chows a lot of datas but there's no results. Just help me man