1. Go to authorized service centers – while it is actually cheaper to go to the ones which are unauthorized, the risk of damaging your precious gadget is just too high. Most often than not these unauthorized service centers use fake parts and are also not well trained to do servicing to your gadgets. For example, when you are overseas like in Singapore and your iPhone malfunctions then obviously you need to bring it at a shop that does repair iPhone Singapore. Then you can just Google the authorized service centers.
2. Use original parts – One of the most common mistakes of people is to use fake parts for their gadgets. This is a big no-no since some of these are manufactured in substandard conditions. Not only does it damages your gadgets you are also risking your life for possible hazards. There has been news all across the globe of exploding fake chargers and this can be very dangerous for you.