Based on the teardown the repairability of the Vivo X90 seems to be average. The use of adhesive for the back cover and battery can make it difficult to open and replace these components. However the battery cable and pull tabs provided for battery removal are positive aspects. The screen cable and screen can also be removed without having to remove too many components. However the plastic covers covering the boards may need to be removed to access certain cables which can be a negative aspect. Overall I would give the repairability of the Vivo X90 a score of 8.0 out of 10.