Airalo vs Holafly vs Nomad vs aloSIM: 4 eSIM Apps Ranked (2026)
1-3 star analysis of the 4 most-installed eSIM travel data apps: Airalo, Holafly, Nomad, and aloSIM. Activation failures, hotspot blocks, throttled "unlimited" plans, and what international travelers complain about most in 2026.