Finally i decided to upgrade my iPhone 3G to iOS4 today although the official iOS4 firmware has been released since couple of days ago. The reason was not only because i didn’t have time to do it before, but also there’s another considerations. So, if you have not yet upgraded your iPhone to iOS4 but plan to do that i suggest you to read my notes below.
iPhone iOS4 firmware was released officially on June 21st. It’s compatible with iPhone 4, iPhone 3GS, and iPhone 3G. You can upgrade your existing iPhone whatever is the OS version to the iOS4. When you connecting your iPhone to iTunes it will automatically detect the update and offer you to upgrade it. The question is, are you really need to do it now or should you have to wait? The following notes probably will help you to make your decision.
Features – Apple claims there are more than 100 new features come with the iOS4. However not all features are compatible with all devices. For example, multitasking which is probably the most wanted feature of iPhone is available only with iPhone 4 and iPhone 3GS. Read the iPhone iOS4 new features.
Performance – I have done the iOS4 upgrade on my iPhone 3G and restore all my apps and backup back to the iPhone. However, after playing around with the OS i just feel that my iPhone is now slower and less responsive. I had iPhone OS 3.1.3 before and there was no performance issue. Correct me if i’m wrong or if you have different experience after upgrading your iPhone.
Space – The iOS4 consumes more spaces compared to the previous iPhone OS 3.1.3 although not significant. I’m not the iPhone expert so i’m not sure how exactly it is but looking at the firmware source file, the iOS 4 is around 299 MB while the iPhone OS 3.1.3 is around 233 MB.
Apps Compatibility – I have found one app on my iPone so far which is not compatible with the iOS4. The problem is i use this app regularly. I checked to the App Store and according to the info, this app is only tested up to iPhone OS 3 but no info and no update yet for the iOS4. When you plan to upgrade your iPhone to iOS4 you better make sure that all your critical apps already compatible with iOS4.
iPhone Jailbreak – Some of you probably use the jailbroken iPhones. The iOS4 update upgrades the baseband to 05.13.04. In this case you probably need to wait for some times until the iOS4 compatible jailbreaking tools available unless you will loose your jailbreak. What i know so far, the compatible tools available are RedSn0w 0.9.5 b5-3 for iPhone 3G and iPod Touch 2G, and Pwnage Tool 4.0 for iPhone 3GS and iPhone 3G.
iPhone Unlock – If you rely on iPhone unlock such as if you use iPhone with no specific carriers contract you probably need to be careful before deciding to upgrade to iOS4. Indeed you can jailbreak and unlock it when there’s tool available. But based on my experience, jailbreaking and unlocking process is somehow tricky and risky. Unless you are really confident to to that, i suggest to let it be done by the experts.
Well, we don’t always need to go for the new technologies when there’s one come. Besides it costs you times and efforts to upgrade, it’s also risky but at the end you don’t really need it. I personally upgraded my iPhone 3G to iOS4 just for fun since i don’t really have any critical things to risk inside my iPhone even if the worst things happened.




















October 4, 2010 at 10:22 am
the iphone 3G looks cooler and stylish than blackberry;.:
October 19, 2010 at 2:24 am
i love the iphone 3g compared to blackberry or even the google android phone:,,