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No, not necessarily, but it can cause a minor issue. iPhones use a Lithium-Ion battery for its power, using while it's charging won't necessarily ruin the battery, but if you're using the phone while the battery is in the charging process, it can cause the phone to think it has more power than it actually has.
Either your phone won't charge at all when it is plugged in, or it will only charge very slowly (sometimes barely faster than it is discharging). Itâs a very common complaint, so here are a few solutions. Most charging problems are related to your USB cable or charger, or even the port itself. / Â© ANDROIDPIT.