Phone without a physical sim to connect to network

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Harald Welte laforge at
Mon Aug 30 13:16:47 UTC 2021

Hi Mario,

On Sun, Aug 29, 2021 at 03:40:19PM +0300, Mario Lucas wrote:
> I have a running BTS (based on SDR) and i can connect my phone to my network… do / learn some operations…
> I have a couple of sim cards and each time i want to connect to network with different sim i have to switch of mobile remove previous sim put new one etc etc ….
> Is there an application that will be running on PC and connected to my phone which will a kind of simulate sim and connect my phone to my network ? Avoiding me each time physically remove previous sim put new one etc etc …

in theory you could emulate the full sim card and do some software
integration to combine
with the card-emulation ('cardem') mode of the simtrace2 firmware.

more practical / complete, without additional software develpoment, you can
use multiple smart card readers for your various SIM cards, and use osmo-remsim
+ simtrace2 cardem.

Howver, in reality you will still need to restart your phone as every time the
sim changes, everything needs to be re-read from it.  For most phones entering
and leaving airplane mode also works.

> Also another question  — is there a «search» option in the archives :

unfortunately not.  We are considering a migration to mailman3, whose new
list archiver 'hyperkitty' provides this feature.  but it's not very high
on the priority list.

- Harald Welte <laforge at>  
"Privacy in residential applications is a desirable marketing option."
                                                  (ETSI EN 300 175-7 Ch. A6)

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