is it safe to use an old iphone 4S
A family member temporarily needs a smartphone to use Whatsapp or WeChat and iMessage while travelling
I could give him an old iPhone 4s I don't need anymore. It's working on IOS 9.3.6 and I can't update it further
Is it still safe to use (he's going to visit China, Oezbekistan and Turkmenistan during 6 weeks)?
iPhone