In the guide below, we'll let you in on some do's and don'ts for charging your iPhone ... magnetic wireless chargers that aren't MagSafe-certified will also charge at the slower 7.5-watt speed.

When using a standard Qi charger, the iPhone caps the rate at half that speed, offering 7.5W wireless ... a Qi2 wireless charger it should support faster 15W wireless charging. Plus Qi2 phones ...