Microsoft is still working on a fix for Lumia 535 touchscreen issue - Neowin
Microsoft Lumia 535 Repair - iFixit
Microsoft Lumia 535 not charging repair - YouTube
lumia 535 camera not working problem - YouTube
Fix: Wi-Fi not working on Lumia 535
Amazon.com: Microsoft Nokia Lumia 640 LTE RM-1072 8GB 5" Unlocked GSM Windows 8MP Camera Smartphone - Black - International Version No Warranty : Cell Phones & Accessories