With the S4 now in the market for the past a month or so, there’s no doubt numerous owners of the former flagship S3 are wondering if it’s worth their time and money upgrading.

This was why our head-to-head review of the two devices was the most popular content of the past week, as we put the two phones through their paces. The S4 won, as you’d expect, but the S3 still remains a high-end device.

Elsewhere the ongoing war of words between Google and Microsoft over customer wins, and losses, took another turn when Redmond took advantage of the raft of negative comments on our story about Pearson embracing Google services.

Mobile users with O2 received a bit of bad news this week when the company confirmed its deal to access 4,000 or so BT Openzone hotspots was coming to an end, although O2’s own WiFi network, in locations such as McDonalds, is growing all the time.

Elsewhere, our hands-on picture blog of HP’s Moonshot technology also gave V3 readers a chance to see the low-power server technology up close and personal, as the firm used the DataCentres Europe 2013 conference as a chance to tout the technology.

Samsung Galaxy S4 vs Galaxy S3 head-to-head review
We find out if Samsung’s latest iPhone competitor is really worth the extra money

Microsoft sticks the boot in over Google App services use at Pearson
Redmond cites unhappy users as evidence that Google is out of its depth in the enterprise market

Samsung Galaxy Note 8.0 review
Tablet struggles to impress with its cheap build and high price tag
 

O2 ends free WiFi deal with BT
Customers lose access to thousands of hotspots

Microsoft brings anti-botnet fight to the cloud with Azure level-up
Firm looks to make businesses more agile in anti-hacker battle

Microsoft details Windows 8.1 will come with IE11
Windows 8 refresh will be available as a preview from 26 June

Workday CEO to SAP and Oracle: cloud market is passing you by
Aneel Bhusri is in fighting mood as cloud war of words continues

Google gives firms only seven days to come clean on zero-day vulnerabilities
Web firm will support researchers reporting unannounced exploits after a week

HP Moonshot low-power server technology in pictures
V3 gets up close and personal with HP’s low-power server kit

Mobile malware attacks will spread through sensors in handsets
Study describes infections that prey on hardware components