I purchased xelectron w99 sim calling tablet for my brother.
It worked for may be 2-3 months and one fine day got hanged at andriod logo.
Tried to hard reset - without luck.
Mailed customer care.they said they can only repair it. I asked them to drop mail where can I ship it for repair - No mail from them till date.
I asked them if firmware was available anywhere for download. Its not.
Its china made product. If it works it will. Once its gone - you have to throw it.
You wont get any support.
So beware and purchase at your own risk.
I would say a NO! Don’t go for it.