ZX908 Getting started

DL6YA19 days ago

It seems like the SIM card is not working. The yellow LED is constant on. It's a micro Sim from Congstar (Germany a Telekom daughter) what's the requirement for a good SIM?

MrFX19 days ago

Is the card working in a phone? Is the pin disabled? I've a free card from "Kaufland mobil" with an activated "Messaging-Option" for free, which is working great. Do you have an antenna connected to the ZX908? I think it comes without one..., therefore i've ordered an ZX905 (also more bands and 2G) with the antennas.

@halex
I've no waking problem, the tracker wakes up on movement... i'm still on testing, how long the battery (2000mAh) works...

DL6YA19 days ago

The card works great with a Phone. An Antenna is also connected. In the manual someone posted was described that the yellow LED is for the working conditions of the SIM. The SIM I have works great with 4G in a phone with deactivated PIN.

Track-trace19 days ago

If your phone or family have a different simcard provider. Then test with those simcards with pin disabled to see if you get phone signal.

From gps watches i noticed that not all simcards ard supported even when they work in a phone. Best is to test with a simcard from major providers.

MrFX19 days ago

@DL6YA
Does the tracker reply a message, if you send a SMS like this: STA#

Track-trace19 days ago

Also an easy away to test the phone signal in the device is call the phone number.

halex18 days ago

I´ve tested T-mobile and it doesn´t work. A friend had Congstar and it doesn´t work as well. I moved over to 1&1 (Telefonica) and have no problems with it.
STA# also doesn´t work for me .
The only issue is, as mentioned before, my 908 won´t send lat/lon to traccar after re-awake. Maybe 905 work´s better

halex18 days ago

@Felix

thanks for the reply
I´ve ordered a 905 yesterday...

Welsbacher17 days ago

I had the same problem with the 908, it doesn't wake up after sleep and I couldn't get the 905 to communicate with the traccar

halex17 days ago

see the post from Felix on page 1

MrFX16 days ago

I've ordered a second ZX905 and another "Kaufland mobil" card and will report on arrival the setup here...

halex16 days ago

I encountered a new problem. After sending some SMS to my 908 it doesn´t respond anymore. The SImcard works normally in cellphones but the 908 seems to be blocked.

Did someone got the same problem?

MrFX10 days ago

Hi, the next ZX905 arrived yesterday and the additional "Kaufland mobil" card today... i've registered the card, disabled the PIN, activated the "Messaging Option" and sucessfully connected the device with the card with my traccar server... will show you some logs, pictures and the SMS commands with the responds tomorrow.

halex10 days ago

Hi,
mine has arrived as well. Will install is After my holidays. Looking forward for your guide

MrFX10 days ago

Hi,
here's my setup for ZX905 to running with my traccar server (ZX905/2500mAh battery/Kaufland mobil card):

  1. registered card, logged into account, ordered the "Messaging Option" (->Aufladen->Zubuchoptionen), disabled the PIN (with phone)
  2. connected battery to the tracker, inserted card, powered the device on:

karte_eingelegt.jpg
tracker_gestartet.jpg
tracker_IMEI.jpg

  1. first SMS to the tracker to test the network connection:
    IMEI# -> answer: IMEI:xxxxxxxxxxx9690

  2. next SMS to setup the correct APN:
    APN,internet.t-mobile,,# -> answer: Set OK!

  3. check, if the device is connected to 365GPS:

365GPS.jpg

works, IMEI is shown, sim card number also, coordinates are around my location (tracker is inside the house near a window)

  1. next SMS to connect the tracker with my traccar server:
    SERVER,xxx.xxx.xxx.xxx,5199# -> answer: Set OK!
    TIMEZONE,0# -> answer: TIMEZONE#0.0#
    after some seconds this messages appeared in the server log:

2025-09-03 15:02:36 INFO: [T8efb56d7: topin < 80.187.116.69] 78780d010xxxxxxxxxxx9690040d0a
2025-09-03 15:02:36 WARN: Unknown device - xxxxxxxxxxx9690 (80.187.116.69)

In the traccar ui i've now added the new device with the IMEI/ID xxxxxxxxxxx9690

  1. set up connection options, send some SMS:
    HBT,10# -> answer: Set OK! (heartbeat every 10 minutes)
    TIMER,10,3600# -> answer: Set OK! (send position every 10 seconds if moving, 3600 seconds, if not)
    SENDS# -> answer: Sleep time:3 minutes (query the default sleep time, setup with SENDS,X# -> X=minutes 0-60 -> 0=always on)

  2. retrieve status via SMS:
    STA# -> answer:

PRO[Topin][365GPS]
VER[ZX905EU_V2.4.04_2024-09-02_15-39-47]
SEN[1]
MLG[0]
FRQ[10:3600]
IMEI[xxxxxxxxxxx9690]
ICCID[xxxxxxxxxxxxxxx24178]
CSQ[18]
ACC[0]
NET[1]
GPS[0]
CHG[0]
PWR[3599]
RF[1]
IP[xxx.xxx.xxx.xxx:5199]
FIP[:0]
RELAY[0]

  1. That's all! Now the tracker talks with the server. I've tested my first tracker with a 2000 mAh battery in the backpack of my daughter on their way to school and return, the battery was at 30% (STA# shows PWR[3625]) after 5 days.

Greetings!
MrFX