The technical meaning of maintenance involves functional checks, servicing, repairing or replacing of necessary devices, equipment, machinery, building infrastructure and supporting utilities in industrial, business, and residential installations. Terms such as "predictive" or "planned" maintenance describe various cost-effective practices aimed at keeping equipment operational; these activities occur either before or after a potential failure.
https://www.ifixit.com/Device/Samsung_Galaxy_S4_Mini
iFixit's guides to one of the last good Android phones.
https://www.ifixit.com/Device/iPod_5th_Generation_%28Video%29
https://www.ifixit.com/Device/Eee_Pad_Transformer_Prime_TF201
Still the best tablet/laptop combo over 10 years later.
https://www.ifixit.com/Device/Asus_Eee_PC_1005HA
How to fix/maintain the most under-rated laptop of the last 20 years.
