Android smartphones can fall vulnerable to a wide number of security threats due to customisations in the core operating system files made by handset manufacturers, a new study has warned.

The research by security firm F-Secure reviewed several flagship smartphones, including the Samsung Galaxy S9, Huawei Mate 9 Pro and Xiaomi Mi 9, and found that the presence of pre-loaded applications in the custom Android skin and tweaked region-specific settings on devices can impact users differently, based on their geo-location.

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