“…Most (7/12, 58%) of the reviews included studies that were conducted mainly in high-income Western countries [25,26,[29][30][31][32][33], whereas 42% (5/12) focused on LMICs [27,28,[34][35][36], of which 20% (1/5) focused solely on sub-Saharan Africa [34]. In total, 33% (4/12) of the reviews focused on cervical cancer [25,27,32,34]; 8% (1/12) focused on skin cancer [29]; 8% (1/12) focused on breast cancer [30]; 8% (1/12) examined breast, cervical, lung, and colorectal cancers [26]; 25% (3/12) included any type of cancer [28,31,33]; and 2 reviews focused on disease prevention in general [35,36]. In terms of interventions, 42% (5/12) of the reviews included interventions of various types of mHealth technologies [25,[27][28][29]36], 2 (33%) focused solely on SMS text messages [26,35], 1 (17%) focused on social media interventions [31], 1 (17%) was specifically about mobile apps [30], and 25% (3/12) included any type of communication (mHealth, face-to-face, and other media) [32][33][34].…”