Does a Philippine Passport eligible for Shenzhen VOA?

Unfortunately, Philippine citizens are not eligible for a Shenzhen VOA at the time being, even in case that they have been granted a Chinese visa previously. I suggest you to obtain a Chinese visa in advance.

Confirmed that PH passport cannot get VOA. There cheap group Visa instead if needed within the day

Niel, you are definitely right. In reality, it is always the best to joint one of the tours that depart from Hong Kong & Macau and are organized by Hong Kong & Macau agencies to the wide region of Shenzhen, Dongguan, Zhuhai, Guangzhou and some other places on 6-Day Visa Exemption for Tourists to Pearl River Delta. Every single citizenship whose country has diplomatic relations with China can participate in such a group tour for really affordable price and completely visa free.