Apple Looking Into Reports of Problems With iOS 4 on iPhone 3G

The Wall Street Journal reports that Apple is "looking into" reports of issues being experienced by iPhone 3G users who have upgraded to the company's new iOS 4. Discussion forums at Apple, MacRumors, and elsewhere have been filling with reports from users experiencing problems with system responsiveness, battery drains, and overheating.

The most common criticism is that the phone is slow after an upgrade. There are also many complaints that the phone drains the battery quickly and becomes excessively hot. Concern about general problems such as slowness and battery life on gadgets isn't unusual, but using iOS 4 on the iPhone 3G seems to make the problems so bad that the phone is nearly unusable for some people.

In venting their frustration, some users have even gone so far as to create parody videos demonstrating the iPhone 3G's inability to run iOS 4 smoothly.


Meanwhile, some reports have indicated that iOS 4.1, currently in beta testing by developers, will address these issues to some degree.

Apple has made clear since the initial introduction of iOS 4 in April that the new operating system is not fully compatible with all generations of the iPhone and iPod touch due to hardware limitations, with only limited compatibility for the iPhone 3G and second-generation iPod touch suggesting that those models are being pushed to their limits with some of iOS 4's features. Users, however, understandably expected that Apple's steps to disable certain resource-intensive features on those devices should have left the remaining features operating relatively smoothly. That does not, however, appear to be the case for some users.

Related Forum: iPhone

Popular Stories

iOS 26

iOS 26.3 and iOS 26.4 Will Add These New Features to Your iPhone

Tuesday February 3, 2026 7:47 am PST by
We are still waiting for the iOS 26.3 Release Candidate to come out, so the first iOS 26.4 beta is likely still at least a week or two away. Following beta testing, iOS 26.4 will likely be released to the general public in March or April. Below, we have recapped known or rumored iOS 26.3 and iOS 26.4 features so far. iOS 26.3 iPhone to Android Transfer Tool iOS 26.3 makes it easier...
Apple Logo Black

Apple's Next Launch is 'Imminent'

Sunday February 1, 2026 12:31 pm PST by
The calendar has turned to February, and a new report indicates that Apple's next product launch is "imminent," in the form of new MacBook Pro models. "All signs point to an imminent launch of next-generation MacBook Pros that retain the current form factor but deliver faster chips," Bloomberg's Mark Gurman said on Sunday. "I'm told the new models — code-named J714 and J716 — are slated...
iOS 26 Home Feature

Apple Gives Final Warning to Home App Users

Tuesday February 3, 2026 8:55 am PST by
In 2022, Apple introduced a new Apple Home architecture that is "more reliable and efficient," and the deadline to upgrade and avoid issues is fast approaching. In an email this week, Apple gave customers a final reminder to upgrade their Home app by February 10, 2026. Apple says users who do not upgrade may experience issues with accessories and automations, or lose access to their smart...
Aston Martin CarPlay Ultra Screen

Apple's CarPlay Ultra to Expand to These Vehicle Brands Later This Year

Sunday February 1, 2026 10:08 am PST by
Last year, Apple launched CarPlay Ultra, the long-awaited next-generation version of its CarPlay software system for vehicles. Nearly nine months later, CarPlay Ultra is still limited to Aston Martin's latest luxury vehicles, but that should change fairly soon. In May 2025, Apple said many other vehicle brands planned to offer CarPlay Ultra, including Hyundai, Kia, and Genesis. In his Powe...
imac video apple feature

Apple Makes Its Second-Biggest Acquisition Ever

Tuesday February 3, 2026 12:45 pm PST by
Apple recently acquired Israeli startup Q.ai for close to $2 billion, according to Financial Times sources. That would make this Apple's second-biggest acquisition ever, after it paid $3 billion for the popular headphone maker Beats in 2014. This is also the largest known Apple acquisition since the company purchased Intel's smartphone modem business and patents for $1 billion in 2019....