Tap the menu button again and select "Key Input" and enter 4 zeroes (0000) and press OK Tap the menu button again and select "Key Input" and enter an upper case Q and press OK Note: You need to be rooted for this to work Type: *#0011# to enter Service Mode (Be very careful with what you do here) Here's how you can check you existing LTE bands: Use with extreme care & do this at your own risk. The correct values that you would write in these NV can be derived by using Qualcomm NV Calculator app by #vndnguyen.įurther details on the values are in this thread courtesy of #yakapa40Īnother important aspect of controlling the phone network behaviour is through the hidden menu. NV values responsible for LTE bands are 0689. NV values responsible for GSM are 00441, 00946, 0297 Now you should be able to run NV manager or QXDM. If one port won't work, try the next one. In QPST, add the COM port where you see your device. You should see your Sammy in ports like COMxxħ.
If a direct dial doesn't get you to the menu then use any Secret Code explorer app from Google Market, e.g. Enter into diag mode from *#0808# dial pad command. Original Quick Guide as compiled by #fffft quoted here:ġ. Thanks for providing inspiration, guidance and working assumptions to following threads and folks: So if nothing else the guide should be useful for those who accidentally delete default bands on their phones.Īdditional LTE bands have been successfully unlocked on some brands already. The steps worked for me, I was able to disable and then enable some GSM bands. Use everything at your own risk, I'm not going to be responsible for any damage to your phone as a result of you trying to follow the steps. So far there have been found a lot of limitations on Sammy devices so the success is by no means guaranteed. The process might help add extra 3G or 4G/LTE bands if the hardware of your device allows it. Happy to close any gaps in the guide - just shout. I didn't come to it on my own, all thanks and contributors are listed below. Enable unlock edit add GSM LTE bands to Samsung Galaxy S5 QualComm - Galaxy S 5 General I'm going to try and summarise the steps to play around with 3G and 4G bands on Samsung Galaxy S5 devices.