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This is a very small change that boosts the capacity in watt-hours from 5.25 to 5.3. The other subtle change is an extremely small jump in battery capacity, from 1420 mAh in the 4 to 1430 mAh in the 4S. The result is much less conversation-interrupting noise when the 4S vibrates during a call, and less intrusive notification. The result is a virtually silent, completely smooth vibrate, instead of the louder rattle and sharp acceleration that accompanies the counterweight vibration. Like the latter, the 4S includes the same improved vibration unit instead of the counterweight vibrator that most smartphones include. The 4S design is without a doubt, however, an evolution of the CDMA iPhone 4’s design.
CHANGE MOTHERBOARD IPHONE 4 UPDATE
I fully expect Apple to update their identifying iPhone page with basically the above information at some point in time, but to say that the 4S is identical to the previous device is disingenuous. The iPhone 3G and 3GS were famously distinguished from each other by the inclusion of chrome iconography on the back. It is admittedly curious that Apple hasn’t decided to make some other larger change to distinguish the 4S from the other two - there’s no mention of 4S anywhere on the phone. Again, the GSM/UMTS 4 is alone with its three-notch stainless steel bands. The 4S includes the regulatory (FCC, recycling, European Conformity, e.t.c.) logos below its model numbers and FCC ID. There are, however, subtle differences you can leverage to tell the 4S from its two 4 brethren. The rest of the 4S exterior is superficially identical to its predecessor, which has become something of a point of contention for shoppers who like being able to identify themselves as owning a 4S, as opposed to a 4. It’s going to be a case by case basis to determine which 4 cases that cover the front of the display work with the 4S. I say likely because some cases that cover the front of the 4S and are universal might not work as well owing to a small change in the placement of the 4S’ ambient light sensor. The result is that if you have a “universal” case created after the launch of the CDMA iPhone 4, you likely won’t need a new one for the 4S. At that time, case makers also followed suit with a larger vibrate/lock switch port. If you recall previously, however, Apple refreshed its bumpers with a new “Universal” line around the time of the CDMA iPhone 4 launch.
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This is the physical change that breaks compatibility with cases designed for the older GSM/UMTS iPhone 4.
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Just like the CDMA iPhone 4, the 4S also moves the vibrate/lock switch down the device just slightly to accommodate the new break for the top antenna band. The result of this change is that the 4S has a very symmetrical design, as opposed to the GSM/UMTS 4’s asymmetric layout. One is up at the very top, the other is at the very bottom - the two are the small U shaped portions. The long and short of this change is that the notches have been moved around to accommodate a design with two cellular antennas. The GSM/UMTS iPhone 4 previously had three notches, where the CDMA iPhone 4 and 4S have a total of four. Instead, the 4S borrows its stainless steel band break locations from the CDMA iPhone 4, which we talked about extensively when it finally released. The 4S keeps the overall form factor and design of its predecessor, but to call it identical to the iPhone 4 isn’t entirely correct. The review has to start somewhere, and the path of least resistance is usually just exterior appearances - in this case the 4S is easy to go over. Today we’re looking at Apple’s latest iPhone refresh, the iPhone 4S (henceforth just 4S). Leading to each year’s iPhone refresh, excitement, rumors, and hype build to a fever pitch, features and designs are added into an increasingly unrealistic combination, and finally everyone is silenced at the device’s eventual unveiling. History loves to repeat itself, and even Apple isn’t immune to the yearly cycle of rumor and release.