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• Constant presence of daytime GNSS phase scintillation (σ ϕ) due to persistent sporadic-E (E s) over Arabian Peninsula in low solar activity. • The most favorable local time (LT) of the day for the occurrences are the morning (08:00 to 12:00) and the late afternoon (16:00 to 18:00) hours. • Low occurrences of post-sunset scintillation suggests that the main driver of the daytime ionospheric scintillation over Arabian Peninsula is the presence of E s. A constant presence of daytime GNSS phase (σ ϕ) and amplitude (S4) scintillation during the times sporadic-E (E s) was observed, is reported. The most favorable local time (LT) of the day for the occurrences are the morning (08:00 to 12:00) and the late afternoon (16:00 to 18:00) hours. E s and σ ϕ /S4 are found to be in very good correlation. Low occurrences of post-sunset scintillation suggest that the main driver of the ionospheric scintillation over Arabian Peninsula during the low solar activity period is the presence of E s. [ABSTRACT FROM AUTHOR]