# mangOH Red WP7603 reboots on receiving MT SMS **URL:** \ **Category:** mangOH Red\ **Created:** [October 19, 2018, 9:56pm UTC](https://mangoh.discourse.group/t/mangoh-red-wp7603-reboots-on-receiving-mt-sms/2031 "2018-10-19T21:56:48Z")\ **Posts on this page:** 13\ **Page:** 1
**Author:** ![ktanikel](https://avatars.discourse-cdn.com/v4/letter/k/bcef8e/32.png) [@ktanikel](https://mangoh.discourse.group/u/ktanikel)\ **Post date:** [October 19, 2018, 9:56pm UTC](https://mangoh.discourse.group/t/mangoh-red-wp7603-reboots-on-receiving-mt-sms/2031/1 "2018-10-19T21:56:48Z")
Hi, I’m not sure if I should be asking this here or the Legato forums so let me know if this is not the right place. I’m trying to send an MT SMS to my mangOH and on the sending side I can see it being sent but a few seconds later the device reboots without warning. I’m not using Sierra Wireless SIMs. There are absolutely no warnings or errors in either logread or the console so I have no idea what’s wrong. I enabled the smsInboxService, but it behaves no different with the service disabled. Any help troubleshooting this would be appreciated. ---
**Author:** ![Francis.duhaut](https://sea2.discourse-cdn.com/flex016/user_avatar/mangoh.discourse.group/francis.duhaut/32/350_2.png) [@Francis.duhaut](https://mangoh.discourse.group/u/Francis.duhaut)\ **Post date:** [October 20, 2018, 8:02am UTC](https://mangoh.discourse.group/t/mangoh-red-wp7603-reboots-on-receiving-mt-sms/2031/2 "2018-10-20T08:02:38Z")
Hello What power supply is used ? Direct usb from pc ? Try with external dc power (1A 5V minimum). BR Francis ---
**Author:** ![ktanikel](https://avatars.discourse-cdn.com/v4/letter/k/bcef8e/32.png) [@ktanikel](https://mangoh.discourse.group/u/ktanikel)\ **Post date:** [October 22, 2018, 5:38pm UTC](https://mangoh.discourse.group/t/mangoh-red-wp7603-reboots-on-receiving-mt-sms/2031/3 "2018-10-22T17:38:28Z")
It’s running off the battery that came with the kit. I’ll try external power and report back. ---
**Author:** ![ktanikel](https://avatars.discourse-cdn.com/v4/letter/k/bcef8e/32.png) [@ktanikel](https://mangoh.discourse.group/u/ktanikel)\ **Post date:** [October 22, 2018, 9:34pm UTC](https://mangoh.discourse.group/t/mangoh-red-wp7603-reboots-on-receiving-mt-sms/2031/4 "2018-10-22T21:34:06Z")
I tried an external wall adapter rated at 2.4A but the results were the same with minor improvements. I could see the SMS was received on 2 out of 10 attempts but it rebooted on the other 8 attempts. Is this a power supply issue? ---
**Author:** ![asyal](https://sea2.discourse-cdn.com/flex016/user_avatar/mangoh.discourse.group/asyal/32/78_2.png) [@asyal](https://mangoh.discourse.group/u/asyal)\ **Post date:** [October 22, 2018, 10:11pm UTC](https://mangoh.discourse.group/t/mangoh-red-wp7603-reboots-on-receiving-mt-sms/2031/5 "2018-10-22T22:11:41Z")
> [@ktanikel](#): > > tried an external wall adapter rated at 2.4A but the results were the same with minor improvements. I could see the SMS was received on 2 out of 10 attempts but it rebooted on the other 8 attempts. Is this a power supply issue? Can you show the result of logread -f when the reboot happens? ---
**Author:** ![ktanikel](https://avatars.discourse-cdn.com/v4/letter/k/bcef8e/32.png) [@ktanikel](https://mangoh.discourse.group/u/ktanikel)\ **Post date:** [October 22, 2018, 11:07pm UTC](https://mangoh.discourse.group/t/mangoh-red-wp7603-reboots-on-receiving-mt-sms/2031/6 "2018-10-22T23:07:33Z")
As I mentioned in my opening post, the device simply reboots - there is nothing in the log. Here are the last few lines before the reboot: ``` Oct 22 23:04:48 | batteryService[848]/batteryServiceComponent T=main | batteryService.c batteryTimer() 877 | ********************** Oct 22 23:04:48 | batteryService[848]/batteryServiceComponent T=main | batteryService.c ma_battery_GetChargeStatus() 549 | Charge = Full Oct 22 23:04:48 | batteryService[848]/batteryServiceComponent T=main | batteryService.c ma_battery_GetHealthStatus() 496 | health = Good Oct 22 23:04:58 | batteryService[848]/batteryServiceComponent T=main | batteryService.c batteryTimer() 877 | ********************** Oct 22 23:04:58 | batteryService[848]/batteryServiceComponent T=main | batteryService.c ma_battery_GetChargeStatus() 549 | Charge = Full Oct 22 23:04:58 | batteryService[848]/batteryServiceComponent T=main | batteryService.c ma_battery_GetHealthStatus() 496 | health = Good ------------ [Mon, 22 Oct 2018 16:05:12 -0700] Disconnect ------------ ``` ---
**Author:** ![asyal](https://sea2.discourse-cdn.com/flex016/user_avatar/mangoh.discourse.group/asyal/32/78_2.png) [@asyal](https://mangoh.discourse.group/u/asyal)\ **Post date:** [October 22, 2018, 11:25pm UTC](https://mangoh.discourse.group/t/mangoh-red-wp7603-reboots-on-receiving-mt-sms/2031/7 "2018-10-22T23:25:32Z")
> [@ktanikel](#): > > I’m not sure if I should be asking this here or the Legato forums so let me know if this is not the right place. > > I’m trying to send an MT SMS to my mangOH and on the sending side I can see it being sent but a few seconds later the device reboots without warning. I’m not using Sierra Wireless SIMs. There are absolutely no warnings or errors in either logread or the console so I have no idea what’s wrong. I enabled the smsInboxService, but it behaves no different with the service disabled. Any help troubleshooting this would be appreciated. Can you try with a Sierra Wireless SIM? We will try to replicate the issue as well but dont believe it is a power supply issue. ---
**Author:** ![asyal](https://sea2.discourse-cdn.com/flex016/user_avatar/mangoh.discourse.group/asyal/32/78_2.png) [@asyal](https://mangoh.discourse.group/u/asyal)\ **Post date:** [October 23, 2018, 12:14am UTC](https://mangoh.discourse.group/t/mangoh-red-wp7603-reboots-on-receiving-mt-sms/2031/8 "2018-10-23T00:14:36Z")
We have replicated this setup on our side and dont see the issue. @Habib can you describe the setup you used? ---
**Author:** ![Habib](https://avatars.discourse-cdn.com/v4/letter/h/71e660/32.png) [@Habib](https://mangoh.discourse.group/u/Habib)\ **Post date:** [October 23, 2018, 12:49am UTC](https://mangoh.discourse.group/t/mangoh-red-wp7603-reboots-on-receiving-mt-sms/2031/9 "2018-10-23T00:49:14Z")
I just used mangOH Red with the latest released software and Telus SIM and power up through the USB connector from my Laptop. I sent a few SMS and received by device. There was no reboot. If you do differently please let’s know then we can repeat the test. root@swi-mdm9x28:~# cm info Device: WP7603 IMEI: 357409080008560 IMEISV: 4 FSN: U3734285300306 Firmware Version: SWI9X07Y\_02.16.02.00 000000 jenkins 2018/04/19 19:59:02 Bootloader Version: SWI9X07Y\_02.16.02.00 000000 jenkins 2018/[3522.441823] i2c-msm-v2 78b8000.i2c: NACK: slave not responding, ensure its powered: msgs(n:1 cur:0 tx) bc(rx:0 tx:2) mode:FIFO slv\_addr:0x3a MSTR\_STS:0x0c1300c8 OPER:0x00000090 04/19 19:59:02 MCU Version: 002.009 PRI Part Number (PN): 9906965 PRI Revision: 002.001 Carrier PRI Name: GENERIC Carrier PRI Revision: 002.032\_000 SKU: 1103194 Last Reset Cause: Power Down Resets Count: Expected: 39 Unexpected: 11 root@swi-mdm9x28:~# legato version 18.03.0\_b463e04cf08fb8d8f1ea5ee00d7894c0 Power: ON Current Network Operator: TELUS Current RAT: LTE network (LE\_MRC\_RAT\_LTE) Status: Registered, home network (LE\_MRC\_REG\_HOME) Signal: Very strong signal strength (5) PS: Packet Switched Registered, home network (LE\_MRC\_REG\_HOME) ---
**Author:** ![awneil](https://sea2.discourse-cdn.com/flex016/user_avatar/mangoh.discourse.group/awneil/32/486_2.png) [@awneil](https://mangoh.discourse.group/u/awneil)\ **Post date:** [October 23, 2018, 9:01am UTC](https://mangoh.discourse.group/t/mangoh-red-wp7603-reboots-on-receiving-mt-sms/2031/10 "2018-10-23T09:01:50Z")
> [@Habib](#): > > power up through the USB connector from my Laptop Probably best to use a proper power supply - Laptop USB ports are not great to rely on as power sources… > [@Habib](#): > > I sent a few SMS and received by device How, exactly, are you sending the SMS ? Are you using any special characters, long messages, etc, etc ? Do you have a cellular modem to just send a known, simple, straightforward text message? EDIT Is the behaviour different if you send _from_ different devices? Can you successfully send SMS _from_ the mangOH? ---
**Author:** ![Habib](https://avatars.discourse-cdn.com/v4/letter/h/71e660/32.png) [@Habib](https://mangoh.discourse.group/u/Habib)\ **Post date:** [October 23, 2018, 10:31pm UTC](https://mangoh.discourse.group/t/mangoh-red-wp7603-reboots-on-receiving-mt-sms/2031/11 "2018-10-23T22:31:13Z")
I sent short texts like “testing” from my iPhone and could see the message pops up on my AT Command port as below e.g. number 7 indicates 7th received message. However it never reboots. +CMTI: “SM”,7 ---
**Author:** ![ktanikel](https://avatars.discourse-cdn.com/v4/letter/k/bcef8e/32.png) [@ktanikel](https://mangoh.discourse.group/u/ktanikel)\ **Post date:** [October 23, 2018, 10:38pm UTC](https://mangoh.discourse.group/t/mangoh-red-wp7603-reboots-on-receiving-mt-sms/2031/12 "2018-10-23T22:38:44Z")
Thanks for taking time to try and reproduce the problem @asyal and @Habib. Unfortunately, I couldn’t get my hands on a Sierra Wireless SIM to try with a different SIM card. However, I found that turning off the bluetoothUtil app seems to have a positive effect and I’m able to receive an SMS when I do that. I cannot explain this behavior. I’m using the Talon Bluetooth / WiFi card and currently only using Bluetooth on it. ---
**Author:** ![awneil](https://sea2.discourse-cdn.com/flex016/user_avatar/mangoh.discourse.group/awneil/32/486_2.png) [@awneil](https://mangoh.discourse.group/u/awneil)\ **Post date:** [October 24, 2018, 7:14am UTC](https://mangoh.discourse.group/t/mangoh-red-wp7603-reboots-on-receiving-mt-sms/2031/13 "2018-10-24T07:14:50Z")
Sorry, my questions above should have been directed to @ktanikel rather than @Habib : > [@awneil](#): > > How, exactly, are you sending the SMS ? > Are you using any special characters, long messages, etc, etc ? > > Do you have a cellular modem to just send a known, simple, straightforward text message? > > EDIT > > Is the behaviour different if you send _from_ different devices? > > Can you successfully send SMS _from_ the mangOH?