Firstly I've rarely used a smart phone = noob. hence a few genuine doubts. Firstly, 1. I don't like the present sms app (which is the default app) My concern is that If I delete the app will I not be able to receive a text? Which is the best sms app available? If I delete the default sms app is there any way I can retrieve it? 2. I don't like the Contacts tab either, is there a better one available? how do we create new groups? 3. Every time I open the browser my phone freezes. Thanks to Karandpr my battery is fine.