# Mangoh yellow fails to register with network
**URL:** https://mangoh.discourse.group/t/mangoh-yellow-fails-to-register-with-network/6027
**Category:** mangOH Yellow
**Created:** [January 19, 2021, 4:12pm UTC](https://mangoh.discourse.group/t/mangoh-yellow-fails-to-register-with-network/6027 "2021-01-19T16:12:52Z")
**Posts on this page:** 7
**Page:** 1
### Author:  [@rickmcconney](https://mangoh.discourse.group/u/rickmcconney)
#### Post date: [January 19, 2021, 4:12pm UTC](https://mangoh.discourse.group/t/mangoh-yellow-fails-to-register-with-network/6027/1 "2021-01-19T16:12:52Z")
I have a couple of mangoh yellow dev boards with a wp7607 module. Both are failing to register with the network.
cm info
Device: WP7607
IMEI: 359779080407030
IMEISV: 5
FSN: V3026785490610
Firmware Version: SWI9X07Y\_02.18.05.00 000000 jenkins 2018/07/19 17:40:21
Bootloader Version: SWI9X07Y\_02.18.05.00 000000 jenkins 2018/07/19 17:40:21
MCU Version: 002.009
PRI Part Number (PN): 9908663
PRI Revision: 001.002
Carrier PRI Name: GENERIC
Carrier PRI Revision: 002.041\_002
SKU: 1104192
Last Reset Cause: Power Down
Resets Count: Expected: 4 Unexpected: 0
cm sim info
Type: EXTERNAL\_SLOT\_1
ICCID: 89011704252314366318
Home Network Operator:
EID:
IMSI: 310170231436631
Phone Number:
cm data
Index: 1
APN: m2m.com.attz
PDP Type: IPV4
Connected: no
cm radio
Power: ON
Current Network Operator:
Current RAT: Not available
Status: Not registered and not currently searching for new operator (LE\_MRC\_REG\_NONE)
Signal: No signal strength (0)
PS: Packet Switched Not registered (LE\_MRC\_REG\_NONE)
The signal strength is showing as 0. I have the supplied antenna connect to the main antenna connector.
How can I debug this?
---
### Author:  [@jyijyi](https://mangoh.discourse.group/u/jyijyi)
#### Post date: [January 19, 2021, 9:43pm UTC](https://mangoh.discourse.group/t/mangoh-yellow-fails-to-register-with-network/6027/2 "2021-01-19T21:43:54Z")
What is the return of
Ati3
At+cpin?
At+cfun?
At!gstatus?
At!selrat?
At!band?
---
### Author:  [@rickmcconney](https://mangoh.discourse.group/u/rickmcconney)
#### Post date: [January 19, 2021, 9:51pm UTC](https://mangoh.discourse.group/t/mangoh-yellow-fails-to-register-with-network/6027/3 "2021-01-19T21:51:22Z")
Thanks for replying here is the info. I am suspecting that I ordered the wrong module and it does not support North American bands.
ATI3
Manufacturer: Sierra Wireless, Incorporated
Model: WP7607-1
Revision: SWI9X07Y\_02.37.03.00 73df45 jenkins 2020/04/08 10:59:14
IMEI: 359780080680030
IMEI SV: 14
FSN: V2929100630510
+GCAP: +CGSM
AT+CPIN?
+CPIN: READY
At+cfun?
+CFUN: 1
At!gstatus?
!GSTATUS:
Current Time: 216 Temperature: 34
Modem Mitigate Level: 0 ModemProc Mitigate Level: 0
Reset Counter: 1 Mode: ONLINE
System mode: WCDMA PS state: Not attached
IMS reg state: NOT REGISTERED IMS mode: Normal
IMS Srv State: NO SMS,NO VoIP
WCDMA band: WCDMA 2100
WCDMA channel: 10597
GMM (PS) state:DEREGISTERED PLMN SEARCH
MM (CS) state: IDLE PLMN SEARCH
WCDMA L1 state:L1M\_FS LAC: 0000 (0)
RRC state: DISCONNECTED UTRAN Cell ID: FFFFFFFF (4294967295)
RxM RSSI C0: -89 RxD RSSI C0: —
RxM RSSI C1: — RxD RSSI C1: —
At!selrat?
!SELRAT: 00, Automatic
At!band?
Index, Name
00, All bands
---
### Author:  [@jyijyi](https://mangoh.discourse.group/u/jyijyi)
#### Post date: [January 19, 2021, 9:53pm UTC](https://mangoh.discourse.group/t/mangoh-yellow-fails-to-register-with-network/6027/4 "2021-01-19T21:53:07Z")
You can check the available band by
At!entercnd=“A710”
At!band=?
---
### Author:  [@rickmcconney](https://mangoh.discourse.group/u/rickmcconney)
#### Post date: [January 19, 2021, 9:55pm UTC](https://mangoh.discourse.group/t/mangoh-yellow-fails-to-register-with-network/6027/5 "2021-01-19T21:55:10Z")
AT!entercnd=“A710”
OK
AT!band=?
Index, Name, GW Band Mask L Band Mask 1 L Band Mask 2 TDS Band Mask
00, All bands 0002000000400180 00000000080800C5 0000000000000000 0000000000000000
01, Europe 3G 0002000000400000 0000000000000000 0000000000000000 0000000000000000
03, Europe 2G 0000000000000180 0000000000000000 0000000000000000 0000000000000000
05, GSM ALL 0000000000000180 0000000000000000 0000000000000000 0000000000000000
06, Europe 0002000000400180 00000000000800C5 0000000000000000 0000000000000000
07, North America 0000000000000000 0000000000000040 0000000000000000 0000000000000000
08, WCDMA ALL 0002000000400000 0000000000000000 0000000000000000 0000000000000000
09, LTE ALL 0000000000000000 00000000080800C5 0000000000000000 0000000000000000
```
0000000008000000 - B28
0000000000080000 - B20
0000000000000080 - B8
0000000000000040 - B7
0000000000000004 - B3
0000000000000001 - B1
0002000000000000 - B8 (900)
0000000000400000 - B1 (2100)
0000000000000100 - G900E
0000000000000080 - G1800
```
---
### Author:  [@jyijyi](https://mangoh.discourse.group/u/jyijyi)
#### Post date: [January 19, 2021, 10:00pm UTC](https://mangoh.discourse.group/t/mangoh-yellow-fails-to-register-with-network/6027/6 "2021-01-19T22:00:14Z")
Btw, you can check product technical specification and see if it has the band for your area.
---
### Author:  [@rickmcconney](https://mangoh.discourse.group/u/rickmcconney)
#### Post date: [January 19, 2021, 10:12pm UTC](https://mangoh.discourse.group/t/mangoh-yellow-fails-to-register-with-network/6027/7 "2021-01-19T22:12:18Z")
Thanks looks like the WP7607-1 is for EMEA and what I need is the WP7603-1