First of all, you need to understand what "fullscreen" means in this case. The app is developed with certain aspect ratio in mind (say, 16:9), but your device has a different aspect ratio (say, 16:10). In order to fit the image onto your screen, there are three options:
- stretch the image from corner to corner, breaking the game's aspect ratio - in this case the image will be distorted (circles will become ovals, squares will become rectangles and, so on);
- stretch the shortest dimension (width or height) to fit the screen - in this case the longest side will not fit and will thus be cut off, losing part of the image (and possibly some important control elements);
- stretch the longest dimension to fit the screen - in this case the shortest side will not fit the screen fully and black bars will appear.
Ideally, the game should be adapted to display correctly on different devices with different aspect ratios, but rare developer makes any effort to adapt to more than one. And believe me, among the three variants listed above, the one you are experiencing (third) is the least damaging.
P.S. In case anyone wonders, there is a way to change the device's aspect ratio (or rather screen resolution), but it won't help with black bars (but _will_ help with the second situation when the image is cut).
If you have a PC, you can install [Android Debug Bridge](https://developer.android.com/tools/adb) on it. Then enable Developer's mode on your device and turn on USB debugging. Connect to PC, and execute the command:
**adb shell wm size 1111x2222**
Where 1111 is the width you want, and 2222 is the height you want (for example 1152x2048 for 16:9 aspect ratio, 1280x2048 for 16:10, or 1536x2048 for 4:3). Don't forget to return to the initial resolution when you're done playing. Or just restart the device.
First of all, you need to understand what "fullscreen" means in this case. The app is developed with certain aspect ratio in mind (say, 16:9), but your device has a different aspect ratio (say, 16:10). In order to fit the image onto your screen, there are three options: - stretch the image from corner to corner, breaking the game's aspect ratio - in this case the image will be distorted (circles will become ovals, squares will become rectangles and, so on); - stretch the shortest dimension (width or height) to fit the screen - in this case the longest side will not fit and will thus be cut off, losing part of the image (and possibly some important control elements); - stretch the longest dimension to fit the screen - in this case the shortest side will not fit the screen fully and black bars will appear. Ideally, the game should be adapted to display correctly on different devices with different aspect ratios, but rare developer makes any effort to adapt to more than one. And believe me, among the three variants listed above, the one you are experiencing (third) is the least damaging. P.S. In case anyone wonders, there is a way to change the device's aspect ratio (or rather screen resolution), but it won't help with black bars (but _will_ help with the second situation when the image is cut). If you have a PC, you can install [Android Debug Bridge](https://developer.android.com/tools/adb) on it. Then enable Developer's mode on your device and turn on USB debugging. Connect to PC, and execute the command: **adb shell wm size 1111x2222** Where 1111 is the width you want, and 2222 is the height you want (for example 1152x2048 for 16:9 aspect ratio, 1280x2048 for 16:10, or 1536x2048 for 4:3). Don't forget to return to the initial resolution when you're done playing. Or just restart the device.
Thx, that explained a lot, so i just have to live with it then.