“…A total of 39 of the 44 studies (89%) mentioned the types of ICT used in PHC. Telephone calls had the highest number of records (29/39, 74%) [ 30 , 31 , 33 - 38 , 40 , 44 - 48 , 50 , 52 , 53 , 55 - 60 , 62 , 65 , 66 , 69 , 70 , 72 ], followed by video calls (25/39, 64%) [ 30 , 31 , 33 - 41 , 43 - 48 , 55 , 60 , 62 - 65 , 69 , 72 ], patient portal (11/39, 28%) [ 31 , 33 , 35 - 37 , 40 , 42 , 44 , 58 , 61 , 72 ], smartphone apps (5/39, 13%) [ 44 , 49 , 52 , 54 , 68 ], text messages (3/39, 8%) [ 35 , 46 , 60 ], email (3/39, 8%) [ 46 , 62 , 72 ], electronic medical record (2/39, 5%) [ 31 , 72 ], and social networks (1/39, 3%) [ 46 ]. We highlight that many studies used more than one type of technology, mainly phone and video calls.…”