MANILA—The U.S.-China technology war is raging around the world, but the Philippines is no longer torn. It is binding its telecommunications future to China’s.

The country got its first taste of next-generation 5G services in late June with gear supplied by Huawei Technologies Co. This month, a new carrier backed by state-owned China Telecommunications Corp. will begin rolling out a network largely designed in China, to be executed by Chinese engineers in the Philippines.

The moves are a blow to the U.S., which has in recent months pushed allies to shun Huawei. U.S. officials contend Chinese companies could be compelled to conduct espionage for Beijing.

As countries like the Philippines reject pressure from Washington, Chinese companies are embedding themselves deep in strategically important infrastructure. These developments tie countries to Beijing through a new wave of technology that promises to reshape society, from economic growth to military planning.

Huawei, which has repeatedly said it wouldn’t spy for China, estimates its 5G equipment will spread across more than 130 countries, including in Europe. Huawei’s 5G system is up and running in South Korea and will be deploying in the United Arab Emirates this year. Both countries are U.S. allies.