# Change sim to external slot **URL:** \ **Category:** Legato Application Framework\ **Created:** [February 18, 2026, 12:54pm UTC](https://forum.legato.io/t/change-sim-to-external-slot/7001 "2026-02-18T12:54:10Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![fsdabharati](https://avatars.discourse-cdn.com/v4/letter/f/e0b2c6/32.png) [@fsdabharati](https://forum.legato.io/u/fsdabharati)\ **Post date:** [February 18, 2026, 12:54pm UTC](https://forum.legato.io/t/change-sim-to-external-slot/7001/1 "2026-02-18T12:54:10Z")
on mangOH yellow by default module embedded sim is selected how to change it to external slot sim Type: EMBEDDED ICCID: 89332401000010743629 Home Network Operator: I TIM EID: 89033240817620069918070002103913 IMSI: 222013068811959 Phone Number: root@swi-mdm9x28-wp:~# ---
**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex019/user_avatar/forum.legato.io/jyijyi/32/822_2.png) [@jyijyi](https://forum.legato.io/u/jyijyi)\ **Post date:** [February 18, 2026, 1:00pm UTC](https://forum.legato.io/t/change-sim-to-external-slot/7001/2 "2026-02-18T13:00:37Z")
you can see here > **[SIM - cm - Legato Docs](https://docs.legato.io/latest/toolsTarget_cm.html#toolsTarget_cm_sim)** > > Regardless if security is enabled or not, the SIM card PIN code must be entered for every operation. The only ways to change the PIN code are through changepin and unblock. | legato™ is an open source Linux-based embedded platform designed to... ---
**Author:** ![fsdabharati](https://avatars.discourse-cdn.com/v4/letter/f/e0b2c6/32.png) [@fsdabharati](https://forum.legato.io/u/fsdabharati)\ **Post date:** [February 18, 2026, 1:08pm UTC](https://forum.legato.io/t/change-sim-to-external-slot/7001/3 "2026-02-18T13:08:03Z")
I selected external slot sim but not able to perform cm data connect. There is some problem with by default octaveapps which restricts this, could you tell me which are octave apps so i can remove them root@swi-mdm9x28-wp:~# app status [stopped] NtagDhubIf [running] actions [running] atAirVantage [running] atQmiLinker [running] atService [running] audioService [running] avcService [running] battery [stopped] bluetoothSensorTag [running] button [running] buzzer [running] canopen [running] cellNetService [running] dataConnectionService [stopped] dataHub [running] environment [running] fwupdateService [running] gpioService [stopped] helloYellow [running] imu [running] io [running] leds [running] light [running] location [running] modbus [running] modemService [stopped] ntag [running] portService [running] positioningService [running] powerMgr [running] qmiAirVantage [running] remote [running] secStore [stopped] spiService [running] tools [running] util [stopped] vegasMode [running] virtual [stopped] voiceCallService [stopped] wifi [stopped] wifiService ---
**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex019/user_avatar/forum.legato.io/jyijyi/32/822_2.png) [@jyijyi](https://forum.legato.io/u/jyijyi)\ **Post date:** [February 18, 2026, 1:32pm UTC](https://forum.legato.io/t/change-sim-to-external-slot/7001/4 "2026-02-18T13:32:15Z")
you can see here: > **[APN will recover when mangOH Yellow reboot](https://mangoh.discourse.group/t/apn-will-recover-when-mangoh-yellow-reboot/4830/5)** > > Hi, at!uims? !UIMS: 0 OK ati9 Manufacturer: Sierra Wireless, Incorporated Model: WP7702 Revision: SWI9X06Y\_02.32.02.00 c2e98c jenkins 2019/08/30 07:28:21 IMEI: 352653090190216 IMEI SV: 4 FSN: 4L931585050XXX +GCAP: +CGSM OK ---
**Author:** ![fsdabharati](https://avatars.discourse-cdn.com/v4/letter/f/e0b2c6/32.png) [@fsdabharati](https://forum.legato.io/u/fsdabharati)\ **Post date:** [February 18, 2026, 2:00pm UTC](https://forum.legato.io/t/change-sim-to-external-slot/7001/5 "2026-02-18T14:00:13Z")
getting below error, is there any way to force mobile operator manually root@swi-mdm9x28-wp:~# cm data Index: 1 APN: [web.vodafone.de](http://web.vodafone.de) PDP Type: IPV4V6 Connected: no root@swi-mdm9x28-wp:~# cm radio Power: ON Current Network Operator: Current RAT: Module not registered on network, RAT not available Status: Registration was denied, usually because of invalid access credentials (LE\_MRC\_REG\_DENIED) Signal: No signal strength (0) PS: Packet Switched Not registered (LE\_MRC\_REG\_NONE) root@swi-mdm9x28-wp:~# cm data connect Setting up profile 1 Connecting … failed Sun Jan 6 01:11:23 +01 1980 - Connection Failure: LE\_FAULT root@swi-mdm9x28-wp:~# cm raadio Service ‘raadio’ does not exist. root@swi-mdm9x28-wp:~# cm radio Power: ON Current Network Operator: [Telekom.de](http://Telekom.de) Current RAT: Module not registered on network, RAT not available Status: Registration was denied, usually because of invalid access credentials (LE\_MRC\_REG\_DENIED) Signal: Strong signal strength (4) PS: Packet Switched Not registered (LE\_MRC\_REG\_NONE) ---
**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex019/user_avatar/forum.legato.io/jyijyi/32/822_2.png) [@jyijyi](https://forum.legato.io/u/jyijyi)\ **Post date:** [February 18, 2026, 2:07pm UTC](https://forum.legato.io/t/change-sim-to-external-slot/7001/6 "2026-02-18T14:07:32Z")
i think you better check by AT command first like ```auto ati3 ati8 AT!selrat? at!band? AT!selciot? AT+Cgdcont? at!uims? aT+cpin? AT+COPS? AT!gstatus? ``` To register dedicated operator, you need to use AT+COPS command by manual mode BTW, what operator do you want to register? Does it support LTE CAT-M or NBIOT?