How granular can advertisers get with device targeting on Twitter Ads?

Advertisers can get quite granular with device targeting on Twitter Ads. Twitter's device targeting feature allows advertisers to target their ads to specific types of devices, including mobile phones, tablets, and desktop computers, and provides several options for targeting at a more granular level.

Here are some of the ways advertisers can get granular with device targeting on Twitter Ads:

1. Operating System: Advertisers can target specific operating systems, such as iOS or Android, and even target specific versions of those operating systems.
2. Device Model: Advertisers can target specific device models, such as the iPhone 12 or Samsung Galaxy S21.
3. Connection Type: Advertisers can target users based on their connection type, such as Wi-Fi or cellular, and even target specific carriers.
4. Location: Advertisers can target users based on their location, such as country, region, metro area, or postal code.
5. Language: Advertisers can target users based on their language preference.
6. Gender: Advertisers can target users based on their gender.
7. Age: Advertisers can target users based on their age range.
8. Interests and Keywords: Advertisers can target users based on their interests and keywords, allowing them to reach users who are interested in specific topics or have engaged with related content.
9. Behaviors: Advertisers can target users based on their behavior, such as their purchasing habits or device usage patterns.

By using these targeting options, advertisers can reach specific audiences on the most relevant devices, and optimize their campaigns to improve their return on investment. However, it's important to note that using too many targeting options or getting too granular may limit the reach of your campaign, so it's important to carefully consider which targeting options to use based on your campaign goals and target audience.