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well I got a phone as obf swap at Vodacom repairs in cresta mall on the 01/07/15 a month later my phone was giving me a problem so I took it back for system update as we all thought might be the problem to my phone constantly freezing , showing multiple screens when the is an incoming call, not being able to open any applications and automatically going back to menu whenever I open an application... so then I get my phone back even worse I don't know what this person did and I couldn't come back as I'm staying in centurion and my tight schedule at work. .. i made time and i took it again same problem got it back on the 1st of November 15, during the course of the month I see nothing has been done again so went back to the shop explained my problem to the lady who was helping me and asked if they can track the amount of times this phone come for repairs and she said yes ..now my question is I got the my phone back lastweek Friday and I'm still experiencing the very same problem my phone is even slow to process anything. Do I take it back AGAIN for what ? as the engineers report come back as N.F.F so is the any technical explanation on what should happen ? And is there a solution