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There's been a lot of talk about how Apple can improve the iPhone display. Ultimately, the goal is a lighter, brighter, thinner screen that extents battery life. Rumors have been floating around for some time surrounding Sharp's IGZO, however the technology has failed to surface on an Apple product to date. Now thanks to a new patent filing the possibility of an OLED (organic light-emitting diode) display has resurfaced.

Although Samsung, among others, has already embraced the OLED thanks to its thin profile and power-sipping nature, it seems Apple plans to customize and improve on the technology before adding OLED to the iPhone. In the patent, Apple describes photodiode sensors embedded throughout the OLED display, which would serve to improve its function dynamically.

Kingdom Rush: Frontiers version 1.2 is now available. The update brings the Rising Tides campaign, which includes three new levels, six new enemies, a new boss called Leviathan, five new achievements and new Easter eggs. The update is free for users who already own the game. Others can download it now from the App Store for $2.99. Version 1.2 also adds two new heroes Kutsao and Karkinos, who can be unlocked as in-app purchases for $4.99.

In Rising Tides, you must take your army to investigate the mysterious disappearances of ships and people in the waters near Port Tortuga. You will have to defeat an army of evil sea creatures to advance to the final stage to challenge the boss Leviathan. Your army is aided by bomb dropping parrots, and new "Boatswain" guards along the way.

Google has been prolific with its apps, cranking out mobile tools for a variety of its services. Now the company has announced it will retire four of its iOS apps in the coming month. Fans of Google+ Local (formerly Google Places) will be the first to lose a standalone app. Many Google+ Local features are now available in Google Maps instead.

Ratings and reviews created by users will continue to be available via the Google Maps app and on Google+ profiles. Even though Google announced plans to remove Google+ Local from the App Store on August 7 it appears as though the app is already unavailable. So what other iOS apps is Google pulling from the App Store forever?

Google released version 2.0 of its Maps application for iOS earlier this month. One feature that was not mentioned in the official change log is the ability to cache maps. In fact, this capability is hidden and requires a special trick to activate. Performing this one simple step will automatically pre-load the current map into your local cache, making it viewable offline.

This means if you suddenly lose your data connection the map is still available. To save a map to your iOS device, just zoom into the area you want to download then type "Ok maps" without the quotes into the Search box, then hit Search. If successful, Google maps will provide a pop-up box noting that the on-screen map area has been cached.

Looking to save videos from the Vine app to the iOS Camera Roll? Now thanks to the jailbreak tweak VineDownloader the process is simple. Once installed, VineDownloader will add an option to Settings making it possible to switch on and off the tweak. Enable the tweak to get started and make sure the official Vine app is installed.

Normally, when viewing a Vine video the ellipsis (...) in the lower right corner brings up options to Share or Report a post. With VineDownloader on your device, an additional option "Save video" is added to the menu. Simply tap the Save video button to download the video to your Camera Roll. When saving a video for the first time, Vine will ask for access to the Camera Roll.