Phase–resolved burst energetics of FRB 20121102A. The central panel shows the isotropic burst energy as a function of activity phase for the Li et al. (2021) and Jahns et al. (2023) samples. The solid red curve traces the phase-binned median energy, with the shaded region indicating the 1σ bootstrap uncertainty based on 10 000 resamples. The top panel shows the total number of bursts per phase bin. The burst phases were computed assuming a 159.3-day activity period, with a reference epoch MJDref = 58356.5 corresponding to ϕref = 0 (Braga et al. 2025). The right panel displays the marginal energy distributions for the two samples; the Li et al. (2021) sample is described by a bimodal Gaussian with peaks at E ≃ 1.8 × 10³⁷ (dashed blue curve) and 1.2 × 10³⁸ erg (dotted blue curve), while the Jahns et al. (2023) sample is consistent with a single Gaussian peaking at E ≃ 4.0 × 10³⁷ erg (red curve).