2015 was the year wearable tech finally took off, with the Apple Watch set to sell 21 million units within its first 12 months. But can it keep up momentum for next year? As part of our review of the year, we look back at the key trends that shaped mobile marketing in 2015, including Facebook’s 2G push, iPhone ad blockers and Spotify’s creepy new privacy policy.

Key trends to check your 2016 plans against:

Facebook targets developing markets: Free internet and 2G ads for Africa and Asia

India tops China for mobile growth: As Xaomi becomes big palter in wearables

iPhone users get Ad Block: Apple bets on paid content success

Apple Watch launch: Apple boasts strong sales but many are sceptacle

Mobile growth: Accounting for half of global ad spend next year

Biggest 10 headlines of the year:

What advertisers need to know about iOS 9

If you’re an advertiser, Apple is about to make your job more difficult. The latest IOS 9 for iPhones and iPads allows mobile ad blocking and introduces a Flipboard-style news aggregator that favours iAds over rivals. We look at the implications as Apple changes the rules of the mobile ad game…

Spotify’s ‘creepy’ new privacy policy tracks user movement

Spotify has come under fire for a new privacy policy that collects user’s contacts, photos and media files from their phone and even tracks their movements.

Xiaomi now world’s second-biggest wearables maker

Xiaomi, often called ‘China’s Apple’, is now the second biggest wearables maker in the world, according to new research.

Can your site pass Google’s ‘mobile friendly’ test?

This month, Google revealed it was going to start penalising websites that were not mobile-friendly but relegating them on mobile search results. Now, the web giant has revealed further details on how companies can avoid vanishing from their rankings with a handy online testing tool.

View the hangout here

Facebook targets emerging markets with Slideshow ad option
Facebook has launched a new ad option called Slideshow for marketers trying to reach consumers in emerging marketers who have slower Internet connections.

The only way is up: SnapChat wants vertical video ads for mobile screens

Snapchat is urging advertisers to frame their video ads vertically rather than the traditional widescreen format, as consumers move toward mobile usage.

Global ad spend trends: Mobile to account for half worldwide spend by 2016

Mobile ad spend is forecast to top $100bn worldwide in 2016, accounting for more than half of the digital market, according to new research.

Android now ahead of iOS in all regions

Android is now ahead of iOS in all global regions in terms of users, with North America finally tipping away from iPhones and IPads, according to new research.

Mary Meeker’s digital trends: India tops China for mobile growth

Asia makes up 51% of the webs users, with Europe and US claiming 19 and 10% respectively, according to this year’s global internet trends report from Mary Meeker.