my iphone keeps saying please reboot your mobile?

No, it really does not unless it is jailbroken.

What is the exact message on the device?

Mine keeps saying the same too even if I reboot it. It is not jailbroken. It is a SIM-Free (unlocked) iPhone 4.

No such message exists in iOS, so again, what is the EXACT wording of the message?

If you still need assistance, perhaps you mean restart the Apple Mobile Device Service?

iPhone, iPad, iPod touch: How to restart the Apple Mobile Device Service (AMDS) on Windows

iTunes: How to remove and reinstall the Apple Mobile Device Service on Mac OS X

Thanks for your responses!

This is exactly what I get. A black screen with the message "Please reboot your mobile". With options to "Accept" or "Cancel".

It is an unlocked iPhone 4, bought from apple online store in Singapore. Strangely, from today morning it also says "No Service" and I am getting these reboot message from today morning too. It is happening for the first time.

Cheers!

Are you stating the message appears on the device????

The message you reference does not exist in iOS.

There are details that are being left out here unfortunately.

What specifically is being done on the device when this occurs?

Your phone has been jailbroken. This message DOES NOT EXIST in iOS.

@diesel vdub

It is on the device. It appeared twice so far. Both the times, I was not doing anything. The phone was just lying around. I saw this when I unlocked the phone.

@KiltedTim

It is NOT jailbroken. I do not know how I can make you believe it. But (I swear!!!) it is NOT jailbroken 🙂. I never had the need to do so.

The device is jailbroken. No such message exists in iOS.

Where was the device acquired? Apple? Official reseller?

If that's the case, the the message MUST be coming from a specific app. I have a hard time believing that though. A quick google search doesn't reference this message coming from anything other than jailbroken devices.

I got the message the third time some 15 mins back.

@diesel vdub It was bought from Apple online store singapore on the 31st of May 2011.

http://store.apple.com/sg/browse/home/shop_iphone/family/iphone

I am telling you, it is not jailbroken (unless it is possible for someone to hack into my phone and jailbreak it remotely when I am asleep). The only time I remember not having this phone with me is when it goes through the airport security check or sometimes when I am in the shower. So, I am 200% sure that it is not jailbroken 🙂. I do not know how else I can make you believe.

@KiltedTim

I got this message today morning and I ended up on this page by googling it too. All the apps that I have downloaded from the appstore. Most of them are just games, a couple of photo manipulation utilities and apps of a few websites. That is all I have in the phone.

Restore you iphone with your backup.

If still a problem, restore as new, i.e. without your backup.

Okay. Will try it. Thanks!

I know this is a very old thread, but I am getting a very similar message. This is a low level hack of sorts. I am very curious to get the bottom of it. Here is the new thread on StackExchange: http://apple.stackexchange.com/questions/213951/ios-hack-attack-please-reboot-yo ur-mobile