All users go through a time when they’ve sent SMS and wish they hadn’t. To avoid such problems, a new Cydia tweak can be your savior: confirmSMS. What it simply does is that it asks you for confirmation before sending SMS. All you need to do is to just install it and it’ll show you a dialogue box asking you if you’re sure you want to send the SMS. That’s it.
confirmSMS is available in the BigBoss repo for free. You’ll need a jailbroken iPhone to install this tweak. Follow our guides for Mac and Windows. You can follow this guide to jailbreak iOS 4.2.1 on iPhone 4 without updating baseband.