Quick Answer: Indosat vs Telkomsel
Telkomsel is Indonesia’s largest mobile operator with 158 million subscribers and 97%+ 4G population coverage. Telkomsel leads 5G deployment with 2,100+ sites across 56 cities and peak 5G speeds of 610 Mbps. Median 4G speed is 31.95 Mbps.
Indosat Ooredoo Hutchison is Indonesia’s second-largest operator with 100 million subscribers and roughly 90% 4G coverage. Median 4G speed is 23.28 Mbps. 5G deployment is limited. Indosat uses network sharing arrangements to extend coverage.
Side-by-Side Comparison
Telkomsel and Indosat are Indonesia’s top two mobile operators. Telkomsel leads on coverage and 5G. Indosat competes on pricing with aggressive data packages.
| Feature | Telkomsel | Indosat Ooredoo Hutchison |
|---|---|---|
| Subscribers | 158M | 100M |
| 4G Coverage | 97%+ population | ~90% population |
| Median 4G Speed | 31.95 Mbps | 23.28 Mbps |
| 5G Sites | 2,100+ in 56 cities | Limited |
| Peak 5G Speed | 610 Mbps | Not widely tested |
| Parent Company | Telkom Indonesia | Ooredoo + CK Hutchison |
| Fiber Brand | IndiHome | N/A |
Test Telkomsel Speed | Test Indosat Speed
Speed Comparison
Mobile Network Speed
Telkomsel is about 37% faster than Indosat on 4G. The gap grows on 5G where Telkomsel has a much larger network.
| Metric | Telkomsel | Indosat |
|---|---|---|
| Median 4G Download | 31.95 Mbps | 23.28 Mbps |
| 4G Upload | 10-18 Mbps | 7-14 Mbps |
| 5G Download (peak) | 610 Mbps | Limited data |
| 4G Latency | 25-40ms | 30-50ms |
Telkomsel’s 5G covers 56 Indonesian cities with 2,100+ base stations. Jakarta, Surabaya, Bandung, Medan, and Bali have the densest 5G coverage. Indosat’s 5G is available in select areas of Jakarta and a few other cities.
Fixed Broadband
Telkomsel’s parent company Telkom operates IndiHome, the largest fiber broadband service in Indonesia. Indosat does not have a comparable fiber broadband product. For home internet, Telkomsel users can bundle with IndiHome.
Run a Speed Test to check your actual connection speed.
Coverage Comparison
Telkomsel has the widest mobile coverage in Indonesia, reaching 97%+ of the population including remote islands.
| Region | Telkomsel | Indosat |
|---|---|---|
| Java (Jakarta, Surabaya, Bandung) | Strong 4G/5G | Strong 4G |
| Bali | Strong 4G/5G | Good 4G |
| Sumatra | Strong 4G | Good 4G |
| Kalimantan | Good 4G | Moderate 4G |
| Sulawesi | Good 4G | Moderate 4G |
| Papua | Available | Limited |
| Remote islands | Available | Patchy |
Telkomsel’s coverage advantage is largest outside Java. In major Javanese cities, both operators deliver good 4G performance. Indosat uses network sharing to extend coverage in less populated areas.
Pricing
Indosat typically prices 10-20% below Telkomsel for comparable data plans. Indosat runs frequent promotions and bonus data offers to attract price-sensitive users.
Telkomsel charges a premium that reflects its wider coverage and faster speeds. For users who travel across Indonesia’s islands, Telkomsel’s coverage reach justifies the higher cost.
Which Should You Choose?
| Use Case | Pick | Reason |
|---|---|---|
| Fastest 4G speed | Telkomsel | 31.95 Mbps vs 23.28 Mbps median |
| 5G access | Telkomsel | 2,100+ sites in 56 cities |
| Budget mobile plan | Indosat | 10-20% cheaper |
| Travel across Indonesia | Telkomsel | 97%+ population coverage |
| Java-only use | Either | Both strong in Java |
| Home broadband bundle | Telkomsel | IndiHome fiber integration |
| Remote island coverage | Telkomsel | Better reach outside Java |
Telkomsel is the safer choice for most Indonesians, especially those who travel outside Java. Indosat is a good alternative for budget-focused users in Java’s major cities where both networks perform well.
Summary
Telkomsel leads Indonesia with 31.95 Mbps median 4G speed, 97%+ coverage, and the country’s most advanced 5G network at 610 Mbps peak. Telkomsel is the top pick for speed, coverage, and reliability.
Indosat Ooredoo Hutchison competes on price with 100 million subscribers and decent 4G performance in Java. For users in Jakarta, Surabaya, and Bandung who want lower monthly costs, Indosat delivers acceptable speeds at better prices.
Test your connection at Telkomsel Speed Test or Indosat Speed Test.
Last Updated: March 28, 2026 Data Sources: Opensignal Indonesia, Telkomsel.com, Indosat.com