Does the JACS TD191-B work in India?
✔ 2 networks good◐ 2 limited
Mostly. Good on BSNL and Jio; limited on Airtel and Vi. The reasons are on each card.
- ✔ GoodMain bands B41Evidence A · 3 sources
- ✔ GoodMain bands B3 B5Evidence A · 3 sources
- ◐ LimitedLacks main band B40 whyEvidence A · 3 sources
- ◐ LimitedLacks main band B40 whyEvidence A · 3 sources
- • B5
- B8
- • B3
- B1
- • B40 · missing
- • B41
below 1 GHz (coverage) 1–2.7 GHz 3–7 GHz mmWave · dashed = the JACS TD191-B lacks it · • = a main band
Airtel · Main bands on Airtel: B3 B40. The JACS TD191-B lacks B40, so coverage or capacity will be patchy.
Vi · Main bands on Vi: B3 B40. The JACS TD191-B lacks B40, so coverage or capacity will be patchy.
3G off on Airtel (2020)
3G being switched off: Vi
Roaming is allowed for a limited time, then a local profile is needed (evidence A, checked 25 Oct 2026)
Same model, other markets (networks good): ✔ United States 3/3 · ◐ Singapore 3/4 · ✔ Saudi Arabia 3/3 · ✔ United Kingdom 4/4 · ◐ New Zealand 0/3 · ◐ Japan 1/4 · ✔ South Korea 3/3 · ✔ Canada 3/3 · ◐ Australia 1/3
Similar models here: Quectel EC200U-EU · 4/4 good · Quectel EC25-E · 4/4 good · Quectel EG21-G · 4/4 good
All 172 countries for the JACS TD191-B → · India: every network →
Sources for this answer (5) · evidence A = two or more sources, one official · B = one official source · C = industry and independent sources
- A TD191-B 4G LTE USB Dongle: product page and specifications (LTE FDD B1/B2/B3/B4/B5/B7/B8/B12/B13/B17/B20/B66/B71, TDD B39/B41) JACS Solutions · 5 Nov 2026
- A TD191-B datasheet (DS-TD191-B, Qualcomm MDM9x07, LTE Cat 4) JACS Solutions · Sep 2022
- C Frequency checker · India Kimovil · 2 Oct 2026
- C Frequency bands for 2G, 3G, 4G and 5G in India: Jio runs 4G on B3, B5 and B40 NepaliTelecom · 2024
- A Access spectrum holdings of TSPs as on 08.07.2022, by LSA: 700, 800, 900, 1800, 2100, 2300 and 2500 MHz bands Department of Telecommunications (India) · 8 Jul 2022
Network by network
| Network | Verdict | Main bands | 4G bands (✓ supported · ½ partly · ✗ missing) | 5G | LTE-M · NB-IoT |
|---|---|---|---|---|---|
| BSNL | ✔ Good 100% | B41 | B41✓ B1✓ B28✗ | n78 | — |
| Jio | ✔ Good 75% | B3 B5 | B3✓ B5✓ B40✗ | n28 n78 | NB-IoT |
| Airtel | ◐ Limited 80% | B3 B40 | B3✓ B40✗ B1✓ B8✓ B5✓ | n78 | NB-IoT |
| Vi | ◐ Limited 75% | B3 B40 | B3✓ B40✗ B41✓ B1✓ B8✓ | n78 | LTE-M |
Verdicts come from the Band Atlas engine on the open data (CC BY 4.0, GitHub). Networks change: confirm with the operator before you deploy. This page is not legal or certification advice.
