Well here are the some points to be careful about when you are buying Mobile accessories .
1) Always buy the original company based accessories product , these will avoid any problems to your phone For Example - If you want to replace your battery then don’t use any other battery rather than of same company and model .
2) Use of Earphones with soft ear buds - This won’t hurt your ear and you can use it for prolonged period at one go.
3) Never use different charger for the phone - This will damage the battery and it will start getting heat up and will affect the battery life of your phone. For example - if your phone has a battery of 3000mAh and the charger it made for the phone of 4000 mAh battery . Then this will heat up the battery quickly.
4) Use of protective cover - Apply back cover suitable for your phone as per your convenience as it will ensure some safety to your phone from external damage.
Also apply the tempered glass of good quality which will protect your display screen .
These are some basic tips hope you would find it useful .