REPHONE CORE MODULE 4G IS COMING!
Since our researches and investigations have shown that it is only a matter of time that 3G being replaced by the fast-spreading 4G LTE technology, we still decided to skip over 3G and directly go 4G, even though we've put a lot of efforts on the 3G module development. We want to bring you what's the best.
See below, the comparison of 3G and 4G:

We’ve already sketched out the R&D plan of RePhone Core Module 4G, check the followings:
* RePhone Core Module 4G
Spec:
• LTE Cat 1
• FDD bands:2, 4, 17(N.America) ;3, 8, 20(Europe)
• Maximum Transfer Rate: 10 Mb/s download, 5 Mb/s upload
• Powerful microcontroller
• Standard Xadow interface,USB 2.0
• Compatible with all Xadow modules
• Nano SIM, button, LED, antenna
• Voltage:3.3-4.2V
R&D Plan:
• Jan ~ March, 4G module prototype selection, processor solution selection
• April ~ May, RePhone Core Module 4G hardware prototype finished
• June ~ Sept, SW porting, HW&SW optimization, testing, iteration, sourcing & manufacturing
• October, Shipping
We will keep updating the progress of the RePhone 4G module development regularly under this topic, and also, sincerely, we want to invite all of you to join the discussion & iteration of RePhone 4G development in the RePhone Community, to co-create the great wisdom of open R&D and thinking.