For a better quality of service, please adjust your mobile network preference to 3G / 2G or WCDMA / GSM (Auto connect)

We are undertaking a project to resolve mobile network congestion problems that are occurring occasionally.In the meantime, for a better quality of service,we would like to inform you to change your mobile network preferences to 3G / 2G or WCDMA / GSM (Auto connect) .
Please, follow the following steps to change your mobile network preferences
Setting ⇒ More network ⇒ Mobile or Cellular Networks ⇒ Network Mode 3G/2G or WCDMA/GSM (Auto connect)