Gizmodo reports that iOS 4.1 has reincluded the Field Test mode to iOS. Field Test mode allows you to get a numerical figure for your antenna strength rather than the traditional bar measure. To get to Field Mode:
- First, upgrade your iPhone 4 -- or any iPhone -- to iOS 4.1. - Dial *3001#12345#* into your phone [and press Call].
Pressing Home will exit you from the Field Test mode. For reference, Anandtech provides a good discussion about bar strength and signal values. Since that article was published, Apple has remapped the signal strength to # of bar ratio. More negative numbers are worse, and Anandtech reports they were surprised they were able to hold calls with signals as low as -113db.
Most customers won't care about their numerical signal strengths, but the antenna strength changes generated a lot of publicity surrounding the iPhone 4 launch due to issues with new antenna system.
Apple released iOS 26.5 after a few months of beta testing, and while it doesn't have the Siri features we were hoping for since those are being held until iOS 27, there are a handful of useful changes worth knowing about.
Subscribe to the MacRumors YouTube channel for more videos.
End-to-End Encryption for RCS
Support for end-to-end encryption (E2EE) for RCS messages between iPhone and...
We're only four months out from the launch of Apple's premium next-generation smartphone lineup, and while we're not expecting a sea change in terms of functionality, there are still several enhancements rumored to be coming to the iPhone 18 Pro and iPhone 18 Pro Max.
One thing worth noting is that Apple is reportedly planning a major change to its iPhone release cycle this year, adopting a...
While the ongoing RAM chip shortage is leading some Android smartphone makers to increase prices, one analyst believes that Apple will take advantage of the situation with the upcoming iPhone 18 Pro and iPhone 18 Pro Max.
In a research note with GF Securities today, analyst Jeff Pu said he expects Apple to outperform in the smartphone market by having an "aggressive pricing strategy" for the ...
