SMS Deliverer
Huawei E3531: SMS compatibility and AT notes
A 3G HSPA+ stick in HiLink mode: a good data adapter, but not drivable as a classic AT SMS modem in its shipping configuration.
3G USB stickHSPA+ up to 21.6 Mbps downlink, UMTS, GSMListed by the original site, not re-tested
Verdict
A 3G HSPA+ stick in HiLink mode: a good data adapter, but not drivable as a classic AT SMS modem in its shipping configuration.
Specification and SMS behaviour
| Chipset / module | Huawei E3531 stick (internal baseband chipset not verified) |
|---|---|
| Interfaces | USB 2.0. HiLink/MBIM class device: presents a network interface, no serial AT ports by default. |
| Power supply | 5 V from USB, up to 500 mA; consumption under 3.0 W |
| AT command notes | No AT port in the mode it ships in; HiLink web API only. Not verified beyond that. |
| Concatenated (long) SMS | Not verified |
| Receiving SMS / OTP | Not verified |
| MMS | Not verified |
| Date tested | Listed on the original smsdeliverer.com hardware notes; not re-tested in this rebuild (2026-11) |
Fields we could not verify are written as "Not verified" rather than filled with estimates.
Known failures and troubleshooting
- Same HiLink limitation as the E3372 family: no COM port means no AT-based sending.
- If detection fails, check whether the stick enumerated as a network adapter rather than a modem.
Data sources
Related pages
Other models
Questions about this model
Is the Huawei E3531 usable for SMS from a PC?
Only if the stick exposes a serial modem port. In its shipping HiLink mode it does not, so AT-based software cannot send through it. The original site listed the model in its hardware notes; this rebuild did not re-test it.