Without a good battery, you wouldn't be able to be 
mobile for long because you'd need to recharge at a power source.
Always put it in carefully and slowly so that you minimize 
the risk of damaging it. The final option is one 
of the safest and is still very cost effective: Have a 3rd party do the i - Phone repair for you.
While applying light pressure rub the polish on the lens with a clean cloth.
There comes a time when someone has to ask themselves, is the 
juice worth the squeeze.

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