Precautions
1. Lock network, lock frequency segment, lock frequency point and lock PCI function are relatively independent. At present, they are only for LTE (4G) network, with the widest lock frequency segment and the most refined lock PCI in terms of lock granularity.
There is no need to lock the network before locking the frequency band, and the app will automatically handle it.
2. In the case of dual cards, if lock master only is checked, only the current network card will be operated. If you cancel this option, the currently displayed card slot will be locked
3. Band Locking
Please consult your local operator which bands are available. Users who try to break through the network speed suggest choosing one at a time to avoid switching between different frequency points. After checking, click the lock on the right and wait for the command to be completed. This function is provided to the user for free.4. Earfcn locking (EARFCN)
If band locking cannot solve your problem, cellular Pro also provides frequency locking point (EARFCN) function For example, it has been determined that it can be used in a certain frequency band, but the frequency points in this frequency band often change, and usually can't Dwell in the ideal frequency point, this time through the use of frequency locking point to solve.5. PCI locking (base station or cell)
If none of the above methods work, try to precisely lock a cell (PCI). PCI can be understood as cell number, Lock cell needs to input current frequency point and PCI 2 values to operate. If you are not sure which cell it is, you can Select the cell information in the LTE view. Generally, the neighbor cells with better signal strength (rsrp) is selected for operation All signal strengths are distinguished by different colors, with green representing the best and red representing the worst. If you can not remove cell lock after executing reset. please fill 65535 in earfcn and 6535 in pci to get same result.
6. SCS values in NR PCI locking
SCS means subcarrierSpacing. you can fill 0,1,2,3,4 depends on scs values. 15khz -> 0; 30khz -> 1; 60khz -> 2; 120khz -> 3;240khz -> 4;7. NSA mode
Confirm that the system is already in NSA mode.and checked the NSA Mode in 4G page8. Clear the lock
Note: the lock operation is still effective even if it is restarted. If you leave the previous cell, it is recommended to reset to avoid being unable to access the network, Some users will enter GSM network briefly after unlocking, and need to wait for network reselection to enter LTE state <>