Giga has $10.10 for 40GB in retail shops. But I would say the signal is fairly bad, especially in my workplace (which annoys a lot! I cannot play my phone during break). Since I do not need 5G, then for 4G I would vote for Heya.Anyway bottom line is that I will only consider StarHub and SingTel as Telcos just for their far superior coverage. Too bad that Giga's $10.10 plan only provides 10GB per month. Very poor with many more competitive options nowadays like Heya, Zym, and Vivifi.