u-blox SARA-R510M8S in India
The u-blox SARA-R510M8S rates good on 1 of 4 networks in India (Jio). On Airtel it is unconfirmed, missing B40. On Vi it is unconfirmed, missing B40. On BSNL it is unconfirmed, missing B41.
Network by network
| Network | Verdict | Bands in use it supports | Core bands missing |
|---|---|---|---|
| Jio | ✔ Good 75% | B3 B5 | — |
| Airtel | ? To be confirmed 80% | B3 B1 B8 | B40 |
| Vi | ? To be confirmed 50% | B3 B1 | B40 |
| BSNL | ? To be confirmed 0% | — | B41 |
Better-rated models here
- Quectel RM520N-GL 5G Sub-6 · global · Quectel · 4/4 Good
- Quectel EG912U-GL Cat 1 bis · global · Quectel · 4/4 Good
- Quectel EG25-G Cat 4 · global · Quectel · 4/4 Good
About the u-blox SARA-R510M8S
LTE-M / NB-IoT · global · u-blox12
- 4G B1 B2 B3 B4 B5 B8 B12 B13 B18 B19 B20 B25 B26 B28 B66 B71 B85
- LTE-M and NB-IoT assessed together
LTE-M and NB-IoT are assessed together: B25 is LTE-M only, B66, B71 and B85 are NB-IoT only, and the “00” versions do not support NB-IoT.
Network access: long-term roaming
Many globally deployed IoT devices use multi-network roaming SIMs that can attach to several networks in a country, but some countries restrict long-term roaming by foreign SIMs. A local SIM roaming domestically is not affected.
⚠ Long-term roaming by foreign SIMs is not allowed: India tightly restricts long-term roaming by foreign SIMs: several IoT connectivity providers list it among countries that ban it or make it practically impossible (Com4 cites a three-year limit), local KYC rules apply, and deployments usually go through Indian operators.345
All networks and bands in India → · The u-blox SARA-R510M8S in 46 countries →
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Sources
- A SARA-R5 series data sheet UBX-19016638: LTE bands by technology (as mirrored by alldatasheet) u-blox · 2026-10-02
- B u-blox SARA-R510S / SARA-R510M8S product specifications (LTE bands) Macnica · 2026-10-02
- C Permanent roaming in IoT: rules by country (2026) Thingsdata · 2026
- C Navigating permanent roaming challenges for IoT deployments Com4 · 2026-10-02
- B Position paper on permanent roaming: Brazil, China, India and Turkey introduced or enforced bans Transforma Insights · 2023
