How to convert 3g android mobile to 4g | 3g GSM WCDMA mobile phone to 4g LTE network smartphone

This video is about one of the smartphone hacks explaining the conversion of any 3g android smartphone to LTE enable 4g smartphone. One has to simply go to system menu by dialing *#*#4636#*#* from dial pad. From system menu select phone configuration or phone information then change "Prefered network type" to LTE/GSM or LTE/GSM/WCDMA or to LTE only as per requirement and your phone is LTE ready. Do remember to activate voice over LTE option from phone settings in order to make voice call over LTE network popularly known as VoLTE. The procedure explain in the video is same for all service provider like AT&T, reliance, reliance jio, tata docomo, aircel, airtel, vodaphone, idea. Same procedure is applicable for all android phones like micromax smartphone , karbonn mobile smartphone, samsung android smartphone, lenovo mobile phones etc. To know more about this hack or smartphone hacks and tricks in 2017 watch this video.