Yesterday, only 2 weeks after releasing iOS 4.1 Beta 1, Apple seeded the second iOS 4.1 beta to iPhone developers. The only official iOS update released thus far (iOS 4.0.1) was a fix for signal bar problems widely reported by new iPhone 4 owners. Though the signal bar issue and the related "death grip" fiasco has gotten an incredible amount of press, the issues this latest iOS update is reported to address may have a far greater impact with iPhone owners.
Apple has launched the first beta version of iOS 4.1 to developers along with the updated SDK, which means it won't be long until the firmware is released to the general public. Several changes and improvements are included in the new version of iOS 4, although reports have indicated the operating system does not correct antenna reception issues.
The calculation method for displaying bars of cellular signal strength has been revised, and the bar graphics themselves are enlarged. Apple previously announced that the formula they used to convert signal strength to bars was misleading, tacking on extra bars in areas of weak reception. iPhone modem firmware is updated from 01.59.00 to 02.07.01 in the new operating system.