# Dual SIm Switching in WP76XX **URL:** \ **Category:** Uncategorized\ **Created:** [July 22, 2022, 10:53am UTC](https://forum.legato.io/t/dual-sim-switching-in-wp76xx/6252 "2022-07-22T10:53:34Z")\ **Posts on this page:** 12\ **Page:** 1
**Author:** ![krishna.j](https://avatars.discourse-cdn.com/v4/letter/k/2bfe46/32.png) [@krishna.j](https://forum.legato.io/u/krishna.j)\ **Post date:** [July 22, 2022, 10:53am UTC](https://forum.legato.io/t/dual-sim-switching-in-wp76xx/6252/1 "2022-07-22T10:53:35Z")
hi everyone, Iam trying dual sim switching in my WP76XX module , by using GPIO6 pin to switch to external SIM\_2 by using AT Commands , but iam unable to configure my gpio pin to switch to external SIM\_2 the gpio configuration which i want is +WIOCFG=6,3,1,1,3 to switch to SIM\_2 in my Modem using wp76xx , iam attaching the snap shots of the commands which ive used and the response which ive got iam unable to configure my GIO6 pin to switch to external sim\_2 as there are two external sims External sim\_1 and external sim\_2 currently iam in external SIM\_1 mode i want to switch to external SIM\_2 MODE , by using at commands or linux commnds please if someone could help me with this . ![Screenshot from 2022-07-22 16-24-32](https://us1.discourse-cdn.com/flex019/uploads/legato1/original/2X/0/09e33804a79ddbaec38d0cc8d34cbcf8ae4d562c.png) ![Screenshot from 2022-07-22 16-24-37](https://us1.discourse-cdn.com/flex019/uploads/legato1/original/2X/6/6c3768f8d05efa451736f6c8d11380901dace914.png) ![Screenshot from 2022-07-22 16-24-41](https://us1.discourse-cdn.com/flex019/uploads/legato1/original/2X/4/41790aa05dbe279410fa1cea09216f78444e906c.png) ![Screenshot from 2022-07-22 16-24-44](https://us1.discourse-cdn.com/flex019/uploads/legato1/original/2X/4/4a8ef16b779970bec9fd56885aed9ed9d6472fce.png) ---
**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:** [July 22, 2022, 11:56am UTC](https://forum.legato.io/t/dual-sim-switching-in-wp76xx/6252/2 "2022-07-22T11:56:59Z")
Can you control the state of goio6 with +ksimsel now? ---
**Author:** ![krishna.j](https://avatars.discourse-cdn.com/v4/letter/k/2bfe46/32.png) [@krishna.j](https://forum.legato.io/u/krishna.j)\ **Post date:** [July 22, 2022, 12:00pm UTC](https://forum.legato.io/t/dual-sim-switching-in-wp76xx/6252/3 "2022-07-22T12:00:40Z")
no iam unable to control the state of gpio6 with ksimsel because if i keep +KSIMSEL=2 it must switch to SIM\_SLOT\_2 which is not happening , and also iam unablle to configure GPIO6 to switch to external SIM\_SLOT\_2 ---
**Author:** ![krishna.j](https://avatars.discourse-cdn.com/v4/letter/k/2bfe46/32.png) [@krishna.j](https://forum.legato.io/u/krishna.j)\ **Post date:** [July 22, 2022, 12:01pm UTC](https://forum.legato.io/t/dual-sim-switching-in-wp76xx/6252/4 "2022-07-22T12:01:53Z")
It is going to external sim switching mode but only slot\_1 iam unable to switch it to external sim slot\_2 ---
**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:** [July 22, 2022, 1:03pm UTC](https://forum.legato.io/t/dual-sim-switching-in-wp76xx/6252/5 "2022-07-22T13:03:59Z")
Is this the same in fw r13 or r16? BTW, why do you want to set “AT+WCIOFG=6,3”? According to AT command guide, this should be for GPIO4: ![image](https://us1.discourse-cdn.com/flex019/uploads/legato1/original/2X/8/83af99b599c3c5508302ac9ff33ff625e34c76c7.png) ---
**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:** [July 23, 2022, 2:29am UTC](https://forum.legato.io/t/dual-sim-switching-in-wp76xx/6252/6 "2022-07-23T02:29:00Z")
I tried on WP7608 FW R13, I can use AT+KSIMSEL to switch SIM: ```auto at!custom? !CUSTOM: GPSENABLE 0x01 GPSLPM 0x01 IPV6ENABLE 0x01 SIMHOTSWAPDIS 0x02 UIM2ENABLE 0x01 SIMLPM 0x01 USBSERIALENABLE 0x01 SINGLEAPNSWITCH 0x01 TXONINDICATION 0x01 HSICENABLE 0x01 SCRUBEN 0x01 EXTUIMSWITCHEN 0x01 EXTGPSLNAEN 0x01 OK at+wiocfg? +WIOCFG: 2,16,0,0,1,0,0 +WIOCFG: 4,3,0,0,1,0,0 +WIOCFG: 6,8,0,0,1,0,0 +WIOCFG: 7,16,0,0,1,0,0 +WIOCFG: 8,16,0,0,1,0,0 +WIOCFG: 13,16,0,0,1,0,0 +WIOCFG: 21,16,0,0,1,0,0 +WIOCFG: 22,16,0,0,1,0,0 +WIOCFG: 23,16,0,0,1,0,0 +WIOCFG: 24,16,0,0,1,0,0 +WIOCFG: 25,16,0,0,1,0,0 +WIOCFG: 28,16,0,0,1,0,0 +WIOCFG: 29,16,0,0,1,0,0 +WIOCFG: 30,16,0,0,1,0,0 +WIOCFG: 31,16,0,0,1,0,0 +WIOCFG: 32,16,0,0,1,0,0 +WIOCFG: 33,16,0,0,1,0,0 +WIOCFG: 35,16,0,0,1,0,0 +WIOCFG: 42,16,0,0,1,0,0 OK at+cpin? +CPIN: READY OK at+cimi 454065215193898 OK at+ksimsel? +KSIMSEL: 1 OK at OK at+ksimsel=2 OK at+cpin? +CME ERROR: SIM not inserted at+cimi ERROR at+ksimsel=1 OK at+ksimsel? +KSIMSEL: 1 OK at+cpin? +CPIN: READY OK at+cimi 454065215193898 OK ati3 Manufacturer: Sierra Wireless, Incorporated Model: WP7608 Revision: SWI9X07Y_02.28.03.03 000000 jenkins 2019/05/21 03:33:04 IMEI: 352913090501261 IMEI SV: 6 FSN: XG207430060310 +GCAP: +CGSM,+DS OK ``` ---
**Author:** ![vyoma](https://avatars.discourse-cdn.com/v4/letter/v/dbc845/32.png) [@vyoma](https://forum.legato.io/u/vyoma)\ **Post date:** [July 23, 2022, 5:39am UTC](https://forum.legato.io/t/dual-sim-switching-in-wp76xx/6252/7 "2022-07-23T05:39:58Z")
Thank you for your kind reply. We also using WP7608 FW R13 only. we hope this works ![image](https://us1.discourse-cdn.com/flex019/uploads/legato1/original/2X/3/36ae65bb96429408c7e2746812d549658f4ce5ba.png) ---
**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:** [July 23, 2022, 5:49am UTC](https://forum.legato.io/t/dual-sim-switching-in-wp76xx/6252/8 "2022-07-23T05:49:50Z")
On my side , i can use +ksimsel=1 to switch to SIM1. Are you seeing the same AT command log as mine? ---
**Author:** ![krishna.j](https://avatars.discourse-cdn.com/v4/letter/k/2bfe46/32.png) [@krishna.j](https://forum.legato.io/u/krishna.j)\ **Post date:** [July 23, 2022, 6:33am UTC](https://forum.legato.io/t/dual-sim-switching-in-wp76xx/6252/9 "2022-07-23T06:33:53Z")
yes, iam seing the same AT command log as yours and iam able to switch to SIM1 too but i want to switch to my external sim\_2 as shown in the above image of 2 external sim cards , i want to use the second sim interface which iam unable to the +KSIMSEL=2 is not working … ---
**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:** [July 23, 2022, 8:37am UTC](https://forum.legato.io/t/dual-sim-switching-in-wp76xx/6252/10 "2022-07-23T08:37:06Z")
then have you tried the following to set GPIO6 as GPIO usable in linux? ```auto at!entercnd="A710" OK at!custom? !CUSTOM: GPSENABLE 0x01 GPSLPM 0x01 IPV6ENABLE 0x01 SIMHOTSWAPDIS 0x02 UIM2ENABLE 0x01 SIMLPM 0x01 USBSERIALENABLE 0x01 SINGLEAPNSWITCH 0x01 TXONINDICATION 0x01 HSICENABLE 0x01 SCRUBEN 0x01 EXTUIMSWITCHEN 0x01 EXTGPSLNAEN 0x01 OK at!custom="EXTUIMSWITCHEN",0 OK at!reset OK at+wiocfg? +WIOCFG: 2,16,0,0,1,0,0 +WIOCFG: 4,0,0,0,1,0,0 +WIOCFG: 6,0,0,0,1,0,0 +WIOCFG: 7,16,0,0,1,0,0 +WIOCFG: 8,16,0,0,1,0,0 +WIOCFG: 13,16,0,0,1,0,0 +WIOCFG: 21,16,0,0,1,0,0 +WIOCFG: 22,16,0,0,1,0,0 +WIOCFG: 23,16,0,0,1,0,0 +WIOCFG: 24,16,0,0,1,0,0 +WIOCFG: 25,16,0,0,1,0,0 +WIOCFG: 28,16,0,0,1,0,0 +WIOCFG: 29,16,0,0,1,0,0 +WIOCFG: 30,16,0,0,1,0,0 +WIOCFG: 31,16,0,0,1,0,0 +WIOCFG: 32,16,0,0,1,0,0 +WIOCFG: 33,16,0,0,1,0,0 +WIOCFG: 35,16,0,0,1,0,0 +WIOCFG: 42,16,0,0,1,0,0 OK at+wiocfg=6,16 OK at!reset OK root@swi-mdm9x28-wp:~# echo 6 > /sys/class/gpio/export root@swi-mdm9x28-wp:~# ls /sys/class/gpio/ export gpiochip1 gpiochip820 gpiochip916 unexport gpio6 gpiochip1012 gpiochip852 gpiochip948 gpiochip0 gpiochip1018 gpiochip884 gpiochip980 ``` ---
**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:** [July 25, 2022, 1:34am UTC](https://forum.legato.io/t/dual-sim-switching-in-wp76xx/6252/11 "2022-07-25T01:34:31Z")
I used the following, I can control the state of GPIO6: ```auto root@swi-mdm9x28-wp:~# echo 6 > /sys/class/gpio/export root@swi-mdm9x28-wp:~# echo out > /sys/class/gpio/gpio6/direction root@swi-mdm9x28-wp:~# echo 0 > /sys/class/gpio/gpio6/value root@swi-mdm9x28-wp:~# echo 1 > /sys/class/gpio/gpio6/value root@swi-mdm9x28-wp:~# echo 0 > /sys/class/gpio/gpio6/value ``` BTW, if I used the following, I can also control the state of GPIO6: ```auto at!entercnd="A710" OK at!custom="EXTUIMSWITCHEN",1 OK at!reset OK //GPIO6 low state at+ksimsel? +KSIMSEL: 1 OK //GPIO6 high state at+ksimsel=2 OK at+wiocfg? +WIOCFG: 2,16,0,0,1,0,0 +WIOCFG: 4,3,0,0,1,0,0 +WIOCFG: 6,8,0,0,1,0,0 +WIOCFG: 7,16,0,0,1,0,0 +WIOCFG: 8,16,0,0,1,0,0 +WIOCFG: 13,16,0,0,1,0,0 +WIOCFG: 21,16,0,0,1,0,0 +WIOCFG: 22,16,0,0,1,0,0 +WIOCFG: 23,16,0,0,1,0,0 +WIOCFG: 24,16,0,0,1,0,0 +WIOCFG: 25,16,0,0,1,0,0 +WIOCFG: 28,16,0,0,1,0,0 +WIOCFG: 29,16,0,0,1,0,0 +WIOCFG: 30,16,0,0,1,0,0 +WIOCFG: 31,16,0,0,1,0,0 +WIOCFG: 32,16,0,0,1,0,0 +WIOCFG: 33,16,0,0,1,0,0 +WIOCFG: 35,16,0,0,1,0,0 +WIOCFG: 42,16,0,0,1,0,0 OK ``` ---
**Author:** ![krishna.j](https://avatars.discourse-cdn.com/v4/letter/k/2bfe46/32.png) [@krishna.j](https://forum.legato.io/u/krishna.j)\ **Post date:** [July 25, 2022, 6:40am UTC](https://forum.legato.io/t/dual-sim-switching-in-wp76xx/6252/12 "2022-07-25T06:40:34Z")
Thank you so much , it is working now …