Before purchase, please confirm your signal frequency If your phone is Android system, you can download an App called "LTE Discovery" to confirm the band and frequency. If your phone is Apple system, please dial the NO. *3001#12345#* then click "Serving Cell Info" to...

  Before purchase, please confirm your signal frequency band If your phone is Android system, you can download an App called "LTE Discovery" to confirm the band and frequency. If your phone is Apple system, please dial the NO. *3001#12345#* then click "Serving Cell...