International investment intelligence service WARC reports that although overall growth of search advertising spend in 2019 has been the softest since 2015, mobile spend is expected to rise 19.2% to $88.1B by the end of the year.

Biggest country markets for mobile search advertising are:

1. USA: $38B, 43% share
2. China $19B, 22% share
3. Japan $6B, 7% share
4. UK $5B, 6% share

Google's share of mobile searches:

• Worldwide 95%
• USA 94%
• UK 98%
• China 0% (Baidu 80%)

How consumers use different digital platforms:

• Discovery of products:
  1. Instagram 69%
  2. Snap 64%
  3. Facebook 61%
• Research:
  1. Google 70%
  2. Pinterest 51%
• Buy:
  1. Amazon 78%
  2. Google 40%

Some search advertising statistics:

• Google mobile search ads have an average conversion rate of 3.5%.
• Global search spend has increased by 9.6% in 2019 to $135.9B
• 19% of online purchases begin with a search engine.
• Search has a 22% share of all ad spend, 46% of online ad spend.

Comment:

If you're using Google mobile search ads, do they convert at 3.5% or better? If not, first thing to do before trying to draw more ad views is to fix conversion rate through A/B testing or whatever else it takes.