Nokia Lumia 620 is budget Windows Phone 8 running smartphone. It is very good performance generally. However, at times it hangs or freezes. If it is a occasional, then you can do soft reset on Lumia 620 which does not removes any personal files. This is the easiest method. However, if problem continues, then there is only one option, that Hard reset of Nokia Lumia 620. Below is the steps to reset Nokia Lumia smartphone.
Soft reset Nokia Lumia 620
Just press and hold Volume down key and power button for 2 seconds. The device will restart. This will be useful, if your Lumia 620 gets freezed. It will clean up temporary files and free up memery. The performance increases.
Hard reset Nokia Lumia 620
At times, the Windows phones starts to hang or freeze oftenly to an extent we can use the device. It is highly irritating or frustrating to use a slow devices. In this scenario, we can use hard reset of the smartphone. Do note that, you will lose personal data and other updates you have installed on your smartphone when you perform hard reset. So back Nokia Lumia 620, before doing the hard reset.
Steps to be followed to perform Hard reset Nokia Lumia 620
Go to Settings
About Phone
Tap on the reset your phone
You will get a notification on the deletion of all data from the phone. Click on Yes to continue the reset.