Landvo L500S is definitely the cheapest dual sim smartphone because the price is only $69.99. For this price range this phone is great buy. It has really nice design I must admit really decent hardware. The case is very thing approximately 8.9 mm. And it is available in black or white color.
It has 5 inch FWVGA screen with octa core CPU Mediatek MT6592M at speed 1.4 GHz. Landvo L500S has also 1 GB of RAM and 8 GB of internal memory. Which is definitely impressive for this price range. For storage space it supports maximum 64 GB memory card.
It will be delivered with installed Android 4.4.2 system and it supports this frequencies for 3G network WCDMA 900/2100. Battery will have capacity of 1800mAh.
Overall in my personal opinion I think that Landvo L500S is good choice under $100. If you decide to buy it you can buy it here at Gearbest at cheapest price.