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Believe it or not, there are differences between the black and white iPhone 4 besides just color. Many have been waiting for Apple to finally launch this device in white after a 10-month delay. Now that the hardware is available, we can get a better idea of exactly what makes the hardware different in the two models. Apple has made some changes to make sure the white iPhone 4 functions the same as the black version.

The photo above, highlighted by AppleInsider clearly shows a modification to the camera sensor. The right camera, from the white iPhone 4, is recessed further back than the black one on the left. Although the sensors are the same, this difference in distance on the white iPhone 4 camera lens looks to be a compensation for additional light passing through the back of the device.

Well this time it's not the antenna, privacy issues or in-app purchasing. Now that the white iPhone 4 is on store shelves, the matter or its dimensions is causing a stir. Turns out the white model is 0.2 millimeters thicker than its black cousin (for the record that's 0.008 inches).

Credit for the photo above goes to Ryan Cash, who has posted several others on his blog comparing the two different units. He claimed that the 16GB white iPhone 4 immediately felt thicker in his hand compared to his 32GB black model. Now iPhone owners are scrambling to try different cases and make sure they fit on the white version.

Hallelujah! The white iPhone 4 has arrived. The Apple Store online lists both Verizon Wireless and AT&T Mobility models in white with a shipping time of 3-5 business days. The black models are shipping within 24 hours, but if you've waited this long for a white iPhone what's a few more days?

The white iPhone 4 makes no changes or updates to the current model hardware, except for the color of the exterior. Apple is offering the device in 16GB and 32GB versions at the exact same pricing as the black iPhone 4, $199 and $299 respectively. Retail stores will also carry the white iPhone in stock starting today.

Apple has finally addressed complaints that its mobile devices including the iPhone and iPad are tracking users by recording cellular tower triangulation data. The company issued a Q&A document to explain exactly what's happening on the devices they manufacture and how they plan to remedy the issues that even some members of Congress have expressed concerns over.

Apple is already facing lawsuits over the tracking issue, which was revealed by security researchers. Although individual devices have locally stored logs of location data going back as far as the installation of iOS 4.0, Apple insists that the company can't track individuals as any data it collects is anonymous and encrypted. According to the Q&A document, the purpose of these transmissions is to build better location based services and individual iPhones are never tracked at all.

Here's a surprise: no-jailbreak remote iPhone unlock services Cut Your Sim and others are out of business. Apparently their supplier couldn't continue making unauthorized changes to Apple's IMEI database and needs to postpone the service indefinitely. These services were charging a fee of $170 or more to unlock iPhones in a process they claim is permanent without violating the terms of Apple's warranty.

Luckily those who were in line to have their devices unlocked are getting their money refunded. It's not clear why the unlocking procedure had to be stopped, whether it was Apple getting involved or figuring out exactly where the leak was in their database security. What's interesting is that even the operators of Cut Your Sim aren't sure exactly how the iPhones are unlocked, just that the process originates from the UK.