I have been looking around for a decent cheap dual SIM smartphone to use abroad and see Aldi have this Medion Life E5005 on offer from 28th August for £69.99.
There doesn't seem to be a lot of information about the phone online, but seems to be decent specs for the price.
5" display with IPS technology
4G LTE - Cat 4 module with a transfer rate of 50/150 Mbit/s1
Android™ 6.0 Marshmallow
Powerful quad core processor
16 GB2 of internal memory, expandable up to 32 GB with a memory card
Dual SIM3: 2 x micro-SIM
5 MP rear camera with auto-focus, flash and digital zoom and 2 MP front camera