Stolen iPhone - Activation Lock email I got my iPhone 6 stolen in Brazil a few weeks ago. It had a pass-code and 2 factor authentication.

Unfortunately the pass-code was set to only be required every 4 hours so if the thief kept the phone unlocked every now and again we could assume he/she has access to it. The phone was also in air-plane mode when it was stolen.

I immediately used a friends phone to access my iCloud and set up the "erase" option when the phone connected to the internet. I changed my apple password and informed my network provider.

I just got an email saying that "Activation Lock is requesting your password". On iCloud it still stated "erase pending" and that it will happen when the phone next connects to the internet. 

Surely the activation lock request means the iPhone had to connect to the internet?? Why didn't it start erasing itself??

I've now changed it to lost mode to see if that does anything but it says "lost mode pending" and it will activate when the iPhone is connected to the internet.

I was just wondering how i got the activation lock email? And for a stolen iPhone, which mode is best... erase mode or lost mode??
I would take extreme care not to enter your current or former Apple-ID passwords anywhere when following any kinds of directions from emails. The email you have received might well be a fake email sent by the people holding your phone, trying to trick you into giving them your Apple-ID password.

In general, they can do very little with a phone that has been activation locked. However if the phone is unlocked, they can find your e-email address and try to scam you into giving them the code. 

Depending on their technical abilities, they might also have put the phone on a restricted network, where the commands to erase it cannot reach it, but where it can reach other destinations on the Internet.