Friday, June 24, 2011

Problems With ZTE Modems and Solutions

Before you read it, please be informed that never buy or recommend ZTE GSM-3G/HSPA/HSDPA/HSUPA modems. ZTE modems/data cards are good enough for EVDO/CDMA-1x devices, but not for GSM ones! For 3G/HSPA modems go for Huawei ones!

I am currently using ZTE MF190 – the similar device offered by Reliance 3G in India or Cell-C in South Africa. It is a HSUPA device – supports upto 5.76 Mbps uplink and upto 7.2 Mbps downlink. 

There are many problems you may face with the device, the problems are similar to many other ZTE 3G modems. First of all ZTE modems come up with a UI/dashboard which does not support USSD. 

To run USSD on ZTE modems, I tried to use AT-commands using different softwares like HyperTerminal or Putty. All tests went in vain. At last I got MDMA (, which supports ZTE modems partially. Under QoS you can not see speed