Simply put, software like qq does not need to be signed, because Tencent has passed the third edition of Saipan certification, and its signature is only valid for three months (because the software itself has not been certified). After the expiration, you can continue to use it by changing the time. Anyway, after you use Saipan, you will always soak in the jar. You'll know after you get to know it, alas, that's it, it's no trouble! Saipan is a silly thing to use.

As for E66, it is still a good mobile phone, with a strong sense of thinness and metal. The screen of 66 is 2.6, you have to make up your own mind. The disadvantage is that photography is quite poor. It should be counted as 300W W. E series is a business series, so the emphasis is not quite the same. I use E7 1, both of which are close to the speed to meet the demand.