If you want to treat and recover from tenosynovitis of the thumb caused by playing with your cell phone, you must avoid playing with your cell phone anymore and get rid of the undesirable triggers. Since this is the cause of tenosynovitis, it is important to get rid of the undesirable factors. Localized microwave physiotherapy, topical NSAIDs, and shockwave therapy can be used, which is a completely non-invasive treatment option. It is also possible to do local intra-tendon sheath closure therapy, which is a little invasive but very effective treatment. If the tenosynovitis is particularly severe and is not cured by the above treatment methods, surgery can be considered, and there will be no recurrence once the surgery is done.