Check network coverage
Popular areas such as Seminyak, Canggu, Kuta and Ubud have developed mobile connectivity, but signal strength can vary by location and provider. If you're visiting remote beaches, mountain areas or quieter villages, check which Indonesian networks your plan supports.
Look for the advertised 4G or 5G availability, while remembering that actual speeds depend on your device, local network conditions and chosen package. Do not assume every eSIM will perform the same way across the island.