LONDON (Reuters) - Smartphone-only bank Number26 is now offering its services in 17 countries in the euro zone, expanding from a smaller core of European markets it entered a year ago, it said on Tuesday.<div><a href="http://feeds.reuters.com/~ff/reuters/technologyNews?a=4XykcBS3Tak:wLv-UvXm50w:yIl2AUoC8zA"><img src="http://feeds.feedburner.com/~ff/reuters/technologyNews?d=yIl2AUoC8zA" border="0" /></a> <a href="http://feeds.reuters.com/~ff/reuters/technologyNews?a=4XykcBS3Tak:wLv-UvXm50w:V_sGLiPBpWU"><img src="http://feeds.feedburner.com/~ff/reuters/technologyNews?i=4XykcBS3Tak:wLv-UvXm50w:V_sGLiPBpWU" border="0" /></a> <a href="http://feeds.reuters.com/~ff/reuters/technologyNews?a=4XykcBS3Tak:wLv-UvXm50w:-BTjWOF_DHI"><img src="http://feeds.feedburner.com/~ff/reuters/technologyNews?i=4XykcBS3Tak:wLv-UvXm50w:-BTjWOF_DHI" border="0" /></a></div><img src="http://feeds.feedburner.com/~r/reuters/technologyNews/~4/4XykcBS3Tak" height="1" width="1" alt="" />