[srslte-users] Why can not connect to srsLTE network by my own phone

[V2P P2V]

Dear all

I’ve setup my linux by installing srsLTE source code.
I connected it with its srsUE and it worked fine in default configuration.
But I cannot still connect it by my own mobile phone.

Could anyone kindly tell my how to approach that?
Should I need a USIM reader and even buy a programable USIM card?
I’m not very clear that what exactly the USIM reader/ USIM card for.

Thank you all.