In a major win for NSN, O2 UK has selected it for 4G/LTE network upgrade and expansion plans. NSN will prepare O2’s network for 4G mobile services across London and the South East of England.

O2 expects to quickly launch 4G services following the spectrum auction scheduled for early-2013. O2’s investment in its UK network with Nokia Siemens Networks includes an upgrade to its existing GSM and 3G (HSPA) network with the latest radio access technology.

NSN has been the most profitable business for Nokia in Q3 and with wins like “China Mobile” and now “O2”  under its belt, it may usher in better revenue and profitability going ahead.