Note:
When you switch to "LTE Only" Then you will not make or receive call.
When you want to make calls then you need to select the LTE/CDMA/UMTS auto (PRL) mode.
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Service Features:
→ Easy change network to "4G (LTE) Only" Mode
→ Lock to any particular Network Signal like 4G(LTE)/3G/2G only
→ Advanced Network Configuration
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More Information about: Super 4G Network Mode 3G To 4G Switcher