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What is the role of FCM in Android notifications? FCM is a mechanism used in Android to deliver notifications to the user’s device. It relies on key-value pairs to send notification content and display the message. Android versions higher than Oreo require an application to use a notification channel. If this channel is not present, …

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To downgrade Android version, you must first unlock the bootloader. However, not all Android phones are capable of unlocking the bootloader. If it does not, you can always check with the manufacturer for the official method. If not, there are other methods that you can follow to unlock your bootloader. However, be aware that the …

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