I love my watch. I didnt had any phone when I got this watch. I put my sim in it. I was soooooooooooo impressed with this watch. But only 1 thing I hated in this watch was that it couldnt take any calls or do recieve or send sms even if it has sim in it. I could only use data in this watch and that also only in 3g. But I was okay with that 'cause I was able to use whatsapp. I could use wifi for youtube or other things. I hated that I couldnt use sim properly it. And now , I am not even able to charge this watch. I tried changing the chargers, cables but the charging isn't starting.