Since the new firmware update of the Telo TE 390 you might encounter problems installing apps on the device. This is because it has been locked by the manufacturer.
By entering *#*#1122#*#* in the dial pad (and press dial) the device becomes unlocked and you can install apk’s on the device.
Thank you very much for your help !
Is there a code for telo590?
Very useful portal! Thank you very much for your help !