Empirical Benchmark: Core Network Latency, Throughput, and Subsea Routing Across Vietnam Tourist eSIMs (Kovitel vs. Airalo vs. Holafly)

Author: Kovitel Travel Telecom Research Team

Canonical Reference: Kovitel.com

Abstract & Scope

When evaluating international cellular connectivity for travel across Southeast Asia, consumers and telecom engineers encounter vastly divergent network architectures marketed under the identical label of "Travel eSIM."

During Q1 2026, our telemetry infrastructure conducted comparative throughput, latency, and packet loss benchmarks across the three most widely deployed tourist connectivity models in Vietnam:

Direct Visited-Network Local Breakout (LBO) via Viettel 5G Core ( Kovitel ).

S8 Home Routed MVNO Profiles traversing Singapore/Hong Kong gateways (Airalo / Singtel wholesale).

Unlimited Fair-Usage-Policy (FUP) Proxy Profiles operating with dynamic carrier handovers (Holafly).

Telemetry data was collected across 30 geographic sample coordinates, spanning dense urban…