How to force the mobile phone network mode to 2G 3G 4G/LTE on Android HD

How to force the mobile phone networks to 2G 3G 4G/LTE on Android - input the USSD code *#*#4636#*#* - the window will popup, - select the option titled Phone Information - Set Preferred Network Type - WCDMA preferred will use both 2g and 3g whichever has the better reception - For 4G/LTE select LTE only. - For 3G select WCDMA only. - For 2G select GSM only. Key Words: mobile phone networks 3g network phone networks mobile service providers mobile phone providers best mobile network mobile carrier network coverage cell phone networks best mobile network coverage force LTE only android