---
kind: "section"
citation: "47 C.F.R. § 10.500"
title: "47"
number: "10.500"
heading: "General requirements."
url: "https://uscodex.org/cfr/47/10.500"
---

# §10.500. General requirements.


A mobile device marketed for public use under [part 10](/cfr/47/part10.md) as a “WEA-capable mobile device” is required to perform the following functions:

- (a) **Authentication of interactions with CMS Provider infrastructure.**
- (b) **Monitoring for Alert Messages.**
- (c) **Maintaining subscriber alert opt-out selections, if any.**
- (d) **Maintaining subscriber alert language preferences, if any.**
- (e) **Extraction of alert content in English or the subscriber's preferred language, if applicable.**
- (f) **Presentation of alert content to the device, consistent with subscriber opt-out selections.** National Alerts must always be presented.
- (g) **Detection and suppression of presentation of duplicate alerts.**
- (h) Preservation of Alert Messages in a consumer-accessible format and location for at least 24 hours or until deleted by the subscriber.
- (i) [Reserved]
- (j) **Support the Alert Message Requirements in subpart D of this part.**

## Notes

### Amendments

[73 FR 43117, July 24, 2008, as amended at 78 FR 16808, Mar. 19, 2013; 83 FR 8623, Feb. 28, 2018; 86 FR 46790, Aug. 20, 2021; 90 FR 12468, Mar. 18, 2025]

### Authority

Authority: 47 U.S.C. 151, 152, 154(i), 154(n), 201, 301, 303(b), 303(e), 303(g), 303(j), 303(r), 307, 309, 316, 403, 544(g), 606, 1201, 1202, 1203, 1204, and 1206. Link to an amendment published at 88 FR 86836, Dec. 15, 2023.

### Source

Source: 73 FR 43117, July 24, 2008, unless otherwise noted.

### Amendments

[73 FR 43117, July 24, 2008, as amended at 78 FR 16808, Mar. 19, 2013; 83 FR 8623, Feb. 28, 2018; 86 FR 46790, Aug. 20, 2021; 90 FR 12468, Mar. 18, 2025]