Android just keeps getting more competitive when it comes to its rivals.

Android Mobile Ad Impressions increased again in July, with its share jumping some 15 percent during the month, according to TechCrunch.

Android had 61 percent of the impressions on Millennial’s network, Millennial Media reports.

July was the eighth straight month Android beat Apple’s iOS, TechCrunch adds.

In addition, Android’s mobile ad impression share reached 54 percent in June 2011.

Millennial’s network said that iOS’s share was 21 percent of mobile ad impressions in July, a decrease from 26 percent in June. RIM had 14 percent of the share in July.

Globally, in July Windows Phone 7 impressions increased 71 percent month-over-month.

In addition, Android surpassed iOS on ad spending. Millennial said that 48 percent of ad spending came from Android apps, while 43 percent came from iOS apps, Tech Crunch reported.

Also, Apple, HTC and Huawei each at least doubled their impression share over the past two years fueled by the increasing demand for smartphones, TechCrunch said.

In a related matter, InMobi predicts that Android will be the number one global mobile ad platform by the end of 2011, TechZone360 reports. Android garnered an additional 1.9 share points in the recent quarter and had 16.6% ad share. Nokia and Symbian are the top mobile platforms, with 19.6 percent and 19.0 percent ad share respectively, globally. TechZone360 adds that their market share is getting lower.

In other company news, Millennial may have an IPO soon or could even be acquired in a deal, according to a report from TechCrunch.

Millennial was able to raise $27.5 million from investors during 2010.

Millennial Media has over 92 million unique users in the United States each month. In addition, Millennial Media reaches users in over 250 territories.

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