The black model 7290 can't open the wireless service.

Experience tells me that there are several reasons for your suspicion.

Ask you a few questions.

First, are you sure your mobile phone is not in arrears?

Are you from Zhuhai? If it is a tour, then it is possible that black mold can only display SOS. I come from Zhejiang. I traveled to Guangxi, and what happened was the same as yours.

So according to the above questions, please answer them yourself.

I hope you can solve it soon!

But my suggestion is that 7290 will be enough for a while. As a loyal user of BB, I advise you to save money to buy a slightly higher-end machine as soon as possible, because with the development of black mold, 7290 has long been put on the historical stage. If you need to recommend a good one, you can ask me!