Table 3.

Categories and functions of mHealth

Category of mHealth	Function	Studies
Mobile technology and devices, including mobile phone text messages (MPTMs)	Knowledge and tips	Dong et al. [47], Goodarzi et al. [51] Huo et al. [53] Islam et al. [90]
	Suggestions	Haddad et al. [52]; Limaye et al. [58] Owolabi et al. [61]; Owolabi et al. [60]; Peimani et al. [63]; Pfammatter et al. [65]; Rotheram-Borus et al. [67]; Islam et al. [90]; Kumar et al. [55]
	Reminder	Huo et al. [53]
	Medical consultations	None
	Feedback	Huo et al. [53]; Haddad et al. [52]; Limaye et al. [58]; Peimani et al. [63]; Rotheram-Borus et al. [67]; Islam et al. [90]; Liao et al. [57]
Telemedicine	Knowledge and tips	Rasoul et al. [66]; Chai et al. [45]
	Suggestions	Limaye et al. [58] ; Rasoul et al. [66]
	Reminder	None
	Medical consultations	None
	Feedback	Liao et al. [57]
Mobile Phone Calls (MPCs)	Knowledge and tips	Fottrell et al. [49]
	Suggestions	Yasmin et al. [72]; Shahid et al. [68]; Pichayapinyo et al. [64]; Steinman et al. [69]
	Reminder	Yasmin et al. [72]; Shahid et al. [68]
	Medical consultations	None
	Feedback	Yasmin et al. [72]; Anzaldo-Campos et al. [64]
mHealth Apps	Knowledge and tips	Wang et al [71]; Li et al. [56]
	Suggestions	Chai et al. [45]; Sun et al [70]; Wang et al. [71]; Chao et al. [46]
	Medical consultations	Zhou et al. [73]; Anzaldo-Campos et al. [44]; Patnaik et al. [62]
	Reminder	Zhou et al. [73]; Gunawardena et al. [50]; Liao et al. [57]; Li et al. [56]; Wang et al. [71]
	Data monitoring/ collection/ store/ transmit	Doocy et al. [48] ; Patnaik et al. [62],
	Feedback	Zhou et al. [73]; Anzaldo-Campos et al. [44]
Wearable or Portable Monitoring Devices (WPMDs)	Data monitoring/ collection/ store/ transmit	Sun et al. [70]; Gunawardena et al. [50]; Liao et al. [57]; Li et al. [56]